When an unrecognized HTTP Method is given in an directive in an .htaccess file, and that .htaccess file is processed by the corresponding request, the global methods table is corrupted in the current worker process, resulting in erratic behaviour. To permit other .htaccess directives while denying the directive, see the AllowOverrideList directive. WebCisco Working on Patch for Publicly Disclosed IP Phone Vulnerability. Are we missing a CPE here? If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit systems an integer overflow happens which later causes out of bounds writes. Acknowledgements: This issue was reported by Matei "Mal" Badanoiu. Official websites use .gov No packages published . No packages published . Environmental Policy | This could allow a local user to execute code as root if an administrator runs apachectl from an untrusted directory. | Please let us know, Exposure of Sensitive Information to an Unauthorized Actor. This could lead to modules using this API to allow access when they should otherwise not do so. NIST does WebNational Vulnerability Database NVD. WebIllegitimate vulnerability reports are also investigated and rejected so you can focus only on what truly matters. An out-of-bounds memory read was found in mod_proxy_fcgi. A crafted method sent through HTTP/2 will bypass validation and be forwarded by mod_proxy, which can lead to request splitting or cache poisoning. ?. The vulnerability was recently introduced in version 2.4.49. CVE-2021-3450 OpenSSL X509_V_FLAG_X509_STRICT Git OpenSSL Visual Studio 2017 15.9.39. Non-Unix systems are not affected. Site Privacy Since such a triggering HTTP/2 request is easy to craft and submit, this can be exploited to DoS the server. We have provided these links to other web sites because they | endorse any commercial products that may be mentioned on | Copyrights A lock () or https:// means you've safely connected to the .gov website. Acknowledgements: We would like to thank Naveen Tiwari and CDF/SEFCOM at Arizona State University to reporting this issue. By toggling from 'Strict' behavior to 'Unsafe' behavior, some of the restrictions may be relaxed to allow some invalid HTTP/1.1 clients to communicate with the server, but this will reintroduce the possibility of the problems described in this assessment. the facts presented on these sites. Sign up to manage your products. A limited cross-site scripting issue was reported affecting the mod_proxy error page. A XSS flaw affected the mod_proxy_balancer manager interface. The modules mod_proxy_ajp and mod_proxy_http did not always close the connection to the back end server when necessary as part of error handling. Listed software is paired with specific information regarding which version contains the security fixes and which software still requires fixes. Accessibility | Acknowledgements: The issue was discovered by Daniel McCarney Let's Encrypt / Internet Security Research Group (ISRG). Connections could still be opened, but no streams where processed for these. This could be used to DoS the server. WebHulp bij het aanvragen en installeren van SSL Certificaten en digitale handtekeningen, voor alle webservers en applicaties. openssl -- openssl: A buffer overrun can Acknowledgements: This issue was reported by Rgis Leroy. Company. CVSS V2 scoring evaluates the impact of the vulnerability on the host where the vulnerability is located. This led to a NULL pointer dereference on initialised memory, crashing reliably the child process. Accessibility It was found that the fix for CVE-2021-41773 in Apache HTTP Server 2.4.50 was insufficient. This affects only HTTP/2 connections. FOIA This would only be exploitable where a server was set up with proxying enabled but was misconfigured in such a way that the Proxy Error page was displayed. Redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an an unexpected URL within the request URL. WebF5 BIG-IP CVE-2021-22986; OpenSSL CVE-2014-0160; QEMU CVE-2020-14364; poc vulnerability Resources. CISA's BOD 22-01 and Known Exploited Vulnerabilities Catalog for further guidance and requirements. It is awaiting reanalysis which may result in further changes to the information provided. On violation of these restrictions and HTTP response is sent to the client with a status code indicating why the request was rejected. Science.gov This fix adds the "MergeTrailers" directive to restore legacy behavior. Git for Windows is now updated to version 2.35.1.2, which addresses this issue. A flaw in mod_session_dbd caused it to proceed with save operations for a session without considering the dirty flag and the requirement for a new session ID. Cloudflare, F5 and Imperva. Vulnerability Disclosure Acknowledgements: We would like to thank Vasileios Panopoulos and AdNovum Informatik AG for reporting this issue. | Acknowledgements: This issue was reported by Ben Reser. Acknowledgements: This issue was reported by Ben Reser. WebCurrent Description . The memory pools maintained by the server make this vulnerabilty hard to trigger in usual configurations, the reporter and the team could not reproduce it outside debug builds, so it is classified as low risk. Subscribe to Security Bulletins. Acknowledgements: We would like to thank Emmanuel Dreyfus for reporting this issue. Official websites use .gov sites that are more appropriate for your purpose. endorse any commercial products that may be mentioned on | Acknowledgements: Apache HTTP server would like to thank LI ZHI XIN from NSFoucs for reporting this. A crash in ErrorDocument handling was found. not necessarily endorse the views expressed, or concur with The icon is located in the upper right-hand corner. Information Quality Standards We have provided these links to other web sites because they Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered discarding the request body, exposing the server to HTTP Request Smuggling, Acknowledgements: James Kettle . In Apache HTTP Server 2.4 releases 2.4.37 and 2.4.38, a bug in mod_ssl when using per-location client certificate verification with TLSv1.3 allowed a client supporting Post-Handshake Authentication to bypass configured access control restrictions. Readme Stars. You have JavaScript disabled. WebThe vulnerability is caused by a buffer over-read bug in the OpenSSL software, rather than a defect in the SSL or TLS protocol specification. The (1) TLS and (2) DTLS implementations in OpenSSL 1.0.1 before 1.0.1g do not properly handle Heartbeat Extension packets, which allows remote attackers to obtain sensitive information from process memory via crafted packets that trigger a buffer over-read, as demonstrated by reading private keys, related to d1_both.c and t1_lib.c, When generating an HTTP Digest authentication challenge, the nonce sent to prevent reply attacks was not correctly generated using a pseudo-random seed. This could lead to different authentication rules than expected. | Information Quality Standards Note however this issue did not affect them directly and their output was already escaped to prevent cross-site scripting attacks. WebHeartbleed was a security bug in the OpenSSL cryptography library, which is a widely used implementation of the Transport Layer Security (TLS) protocol. vulners. Products CPE Search; Search Common Platform Enumerations (CPE) This search engine can perform a keyword search, or a CPE Name search. Related Links. This site requires JavaScript to be enabled for complete site functionality. A maliciously constructed HTTP/2 request could cause mod_http2 to dereference a NULL pointer and crash the server process. By specially crafting HTTP/2 requests, workers would be allocated 60 seconds longer than necessary, leading to worker exhaustion and a denial of service. Commerce.gov (Note that this vulnerability was fixed in the 2.4.7 release, but the security impact was not disclosed at the time of the release.). A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy declarations, can allow for requests to be directed to a declared Unix Domain Socket endpoint (Server Side Request Forgery). Modules which call the legacy ap_get_basic_auth_pw() during the authentication phase MUST either immediately authenticate the user after the call, or else stop the request immediately with an error response, to avoid incorrectly authenticating the current request. In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody(0) may cause a denial of service due to no default limit on possible input size. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or compilation option might make it possible, with limited consequences anyway due to the size (a single byte) and the value (zero byte) of the overflow, Acknowledgements: This issue was discovered and reported by GHSL team member @antonio-morales (Antonio Morales), Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by mod_session can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service, Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted SessionHeader sent by an origin server could cause a heap overflow, Acknowledgements: Discovered internally Christophe Jaillet, Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF', Acknowledgements: Discovered by Christoph Anton Mitterer. Acknowledgements: Reported by James Kettle of PortSwigger. Acknowledgements: The issue was discovered by Daniel Caminada . CRLF This page lists all security vulnerabilities fixed in released versions of Apache HTTP Server 2.4. Acknowledgements: This issue was reported by Teguh P. Alko. , Visual Studio NuGet UI, , NuGet.org . An attacker able to access a public server status page on a server using a threaded MPM could send a carefully crafted request which could lead to a heap buffer overflow. This issue is known to be exploited in the wild. This may be used to bypass IP based authentication on the origin server/application. Sending a MERGE request against a URI handled by mod_dav_svn with the source href (sent as part of the request body as XML) pointing to a URI that is not configured for DAV will trigger a segfault. Note that it is not a default or recommended configuration to have a public accessible server status page. In the more likely case, this memory is already reserved for future use and the issue has no effect at all. | these sites. No exploit is known to the project. | | Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process requests with the mod_isapi module. Acknowledgements: We would like to thank David Dennerline at IBM Security's X-Force Researchers as well as Rgis Leroy for each reporting this issue. Acknowledgements: The issue was discovered by Elar Lang - security.elarlang.eu. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparision when determining the method of a request and thus process the request incorrectly. The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. It could be used as a Denial of Service attack against users of mod_cache_socache. Scientific Integrity Apache HTTP Server, prior to release 2.4.25 (and 2.2.32), accepted a broad pattern of unusual whitespace patterns from the user-agent, including bare CR, FF, VTAB in parsing the request line and request header lines, as well as HTAB in parsing the request line. By manipulating the flow control windows on streams, a client was able to block server threads for long times, causing starvation of worker threads. searchSecurity : Network security. No Commerce.gov Section 3.1.1 requires exactly one single SP between the method and request-target, and between the request-target and HTTP-version, followed immediately by a CRLF sequence. Beyond Security is proud to be part of Fortras comprehensive cybersecurity portfolio. In a cluster of servers using a common Digest authentication configuration, HTTP requests could be replayed across servers by an attacker without detection. Environmental Policy Further, NIST does not This issue only affects Apache 2.4.49 and Apache 2.4.50 and not earlier versions. An anonymous researcher has been credited with reporting the issue. A malicious client could force the server to misinterpret the request length, allowing cache poisoning or credential hijacking if an intermediary proxy is in use. inferences should be drawn on account of other sites being Acknowledgements: The issue was discovered by Craig Young of Tripwire VERT, . 18 watching Forks. Are we missing a CPE here? A remote attacker could send a carefully crafted request to a server configured as a reverse proxy, and cause the child process to crash. The expression specified in could match '$' to a newline character in a malicious filename, rather than matching only the end of the filename. Denotes Vulnerable Software This issue affected the 2.4.12 release only. the facts presented on these sites. 2.2 Acknowledgements: Reported by Mikhail Egorov (<0ang3el gmail.com>), Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows, Acknowledgements: Discovered by Ivan Zhakov, Apache HTTP Server versions 2.4.41 to 2.4.46 mod_proxy_http can be made to crash (NULL pointer dereference) with specially crafted requests using both Content-Length and Transfer-Encoding headers, leading to a Denial of Service, Acknowledgements: Reported by Marc Stern (), Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in mod_auth_digest. Are we missing a CPE here? Site Privacy You have JavaScript disabled. This is a potential security issue, you are being redirected to | Section 3.2.4 explicitly disallowed any whitespace from the request header field prior to the ':' character, while Section 3.2 disallows all CTL characters in the request header line other than the HTAB character as whitespace. In each case where one agent accepts such CTL characters and does not treat them as whitespace, there is the possiblity in a proxy chain of generating two responses from a server behind the uncautious proxy agent. https://nvd.nist.gov. Acknowledgements: We would like to thank Robert Święcki for reporting this issue. WebFixed in Apache HTTP Server 2.4.52 moderate: Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier (CVE-2021-44224) A crafted URI sent to httpd configured as a forward proxy (ProxyRequests on) can cause a crash (NULL pointer dereference) or, for configurations mixing forward and reverse proxy No Fear Act Policy Packages 0. Secure .gov websites use HTTPS This vulnerability has been modified and is currently undergoing reanalysis. In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileged child processes or threads (including scripts executed by an in-process scripting interpreter) could execute arbitrary code with the privileges of the parent process (usually root) by manipulating the scoreboard. Use of the ap_get_basic_auth_pw() by third-party modules outside of the authentication phase may lead to authentication requirements being bypassed. Please let us know. For older posts, click here to visit our archive. This behavior may be avoided by listing all unusual HTTP Methods in a global httpd.conf RegisterHttpMethod directive in httpd release 2.4.25 and later. IBM Z Enterprise Security. | Acknowledgements: This issue was reported by Takashi Sato. | 181 forks Releases No releases published. Fix handling of the Require line in mod_lau when a LuaAuthzProvider is used in multiple Require directives with different arguments. This made it vulnerable to padding oracle attacks, particularly with CBC. CVE-2021-3711 OpenSSL Buffer Overflow vulnerability A potential buffer overflow vulnerability exists in OpenSSL, which is consumed by Git for Windows. The memory copied is that of the configured push link header values, not data supplied by the client. The SSL protocol 3.0, as used in OpenSSL through 1.0.1i and other products, uses nondeterministic CBC padding, which makes it easier for man-in-the-middle attackers to obtain cleartext data via a padding-oracle attack, aka the "POODLE" issue. sites that are more appropriate for your purpose. A carefully crafted request body can cause a read to a random memory area which could cause the process to crash. A design error in the "ap_some_auth_required" function renders the API unusuable in httpd 2.4.x. IBM Cloud. Acknowledgements: This issue was reported by Martin Holst Swende. : nginx . The DES and Triple DES ciphers, as used in the TLS, SSH, and IPSec protocols and other protocols and products, have a birthday bound of approximately four billion blocks, which makes it easier for remote attackers to obtain cleartext data via a birthday attack against a long-duration encrypted session, as In a sequence of two requests, this results in request A to the first proxy being interpreted as requests A + A' by the backend server, and if requests A and B were submitted to the first proxy in a keepalive connection, the proxy may interpret response A' as the response to request B, polluting the cache or potentially serving the A' content to a different downstream user-agent. OpenSSL 3.0.0 to 3.0.6 decodes some punycode email addresses in X.509 certificates improperly Acknowledgements: The Apache HTTP Server project would like to thank Gaetan Ferry (Synacktiv) for reporting this issue. Users are encouraged to migrate to 2.4.28 or later for this and other fixes. Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. When HTTP/2 was enabled for a http: host or H2Upgrade was enabled for h2 on a https: host, an Upgrade request from http/1.1 to http/2 that was not the first request on a connection could lead to a misconfiguration and crash. | This issue only affects Apache 2.4.49 and not earlier versions. 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Scientific Integrity JSON syntax hack allowed SQLi payloads to sneak past WAFs, Go SAML library vulnerable to authentication bypass, Tailscale VPN nodes vulnerable to DNS rebinding, RCE, Intel disputes seriousness of Data Centre Manager authentication flaw. We also list the versions the flaw is known to affect, and where a flaw has not been verified list the version with a question mark. WebThe vulnerability was disclosed in 2002, but is still present in modern implementation due to poor configuration of the service. not necessarily endorse the views expressed, or concur with Apache HTTP Server protocol handler for the HTTP/2 protocol checks received request headers against the size limitations as configured for the server and used for the HTTP/1 protocol as well. | Acknowledgements: The issue was discovered by Sergey Bobrov. A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. Acknowledgements: The issue was discovered through user bug reports. Acknowledgements: We would like to thank Javier Jimnez (javijmor@gmail.com) for reporting this issue. , : A flaw was found in mod_proxy in httpd versions 2.4.6 to 2.4.9. The CPE Name search will perform searching for an in Apache HTTP Server versions 2.4.0 to 2.4.41, mod_proxy_ftp use of uninitialized value with malicious FTP backend. may have information that would be of interest to you. Each vulnerability is given a security impact rating by the Apache security team - please note that this rating may well vary from platform to platform. may have information that would be of interest to you. Implied additional whitespace was accepted in the request line and prior to the ':' delimiter of any request header lines. IBM Support. Iranian Hackers Deliver New 'Fantasy' Wiper to Diamond Industry via Supply Chain Attack. WebPortal zum Thema IT-Sicherheit Praxis-Tipps, Know-How und Hintergrundinformationen zu Schwachstellen, Tools, Anti-Virus, Software, Firewalls, E-Mail The use of request body decompression is not a common configuration. Google introduces Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that point past the end of the storage allocated for the buffer. Share sensitive information only on official, secure websites. In Apache HTTP Server versions 2.4.20 to 2.4.43, a specially crafted value for the 'Cache-Digest' header in a HTTP/2 request would result in a crash when the server actually tries to HTTP/2 PUSH a resource afterwards. Vulnerability Disclosure These defects represent a security concern when httpd is participating in any chain of proxies or interacting with back-end application servers, either through mod_proxy or using conventional CGI mechanisms. This issue affected releases 2.4.18 and 2.4.20 only. NCSC-NL and partners are attempting to maintain a list of all known vulnerable and not vulnerable software. | | It was introduced into the software in 2012 and publicly disclosed in April 2014. 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