K15300: Apache HTTP Server mod_dav DoS vulnerability CVE-2013-6438

Security Advisory Description The davxmlgetcdata function in main/util.c in the moddav module in the Apache HTTP Server before 2.4.8 does not properly remove whitespace characters from CDATA sections, which allows remote attackers to cause a denial of service daemon crash via a crafted DAV WRITE...

K38453823: Apache vulnerability CVE-2021-31618

Security Advisory Description 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. On violation of these restrictions and HTTP response is sent to the client...

K44591505: Apache vulnerabilities CVE-2019-0196, CVE-2019-0197, and CVE-2019-0220

Security Advisory Description CVE-2019-0196 A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handling could be made to access freed memory in string comparison when determining the method of a request and thus process the request...

K17296065: Apache mod_userdir vulnerability CVE-2016-4975

Security Advisory Description Possible CRLF injection allowing HTTP response splitting attacks for sites which use moduserdir. This issue was mitigated by changes made in 2.4.25 and 2.2.32 which prohibit CR or LF injection into the "Location" or other outbound header key or value. Fixed in Apache...

K28508558: Apache mod_cache vulnerability CVE-2013-4352

Security Advisory Description The cacheinvalidate function in modules/cache/cachestorage.c in the modcache module in the Apache HTTP Server 2.4.6, when a caching forward proxy is enabled, allows remote HTTP servers to cause a denial of service NULL pointer dereference and daemon crash via vectors...

K56331254: Apache HTTP server vulnerability CVE-2021-41524

Security Advisory Description While fuzzing the 2.4.49 httpd, a new null pointer dereference was detected during HTTP/2 request processing, allowing an external source to DoS the server. This requires a specially crafted request. The vulnerability was recently introduced in version 2.4.49. No...

K27129140: mod_auth_digest vulnerability CVE-2020-35452

Security Advisory Description Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Digest nonce can cause a stack overflow in modauthdigest. There is no report of this overflow being exploitable, nor the Apache HTTP Server team could create one, though some particular compiler and/or...

K41454238: Apache mod_auth_openidc vulnerabilities CVE-2021-32785 CVE-2021-32786 CVE-2021-32792

Security Advisory Description CVE-2021-32785 modauthopenidc is an authentication/authorization module for the Apache 2.x HTTP server that functions as an OpenID Connect Relying Party, authenticating users against an OpenID Connect Provider. When modauthopenidc versions prior to 2.4.9 are configur...

K94828628: Apache mod_proxy HTTP/2 vulnerability CVE-2021-33193

Security Advisory Description A crafted method sent through HTTP/2 will bypass validation and be forwarded by modproxy, which can lead to request splitting or cache poisoning. This issue affects Apache HTTP Server 2.4.17 to 2.4.48. CVE-2021-33193 Impact There is no impact; F5 products are not...

K32305110: mod_session vulnerability CVE-2021-26691

Security Advisory Description In 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 CVE-2021-26691 Impact There is no impact; F5 products are not affected by this vulnerability. Security Advisory Status F5 Product...

K17313: PHP vulnerability CVE-2014-4721

Security Advisory Description The phpinfo implementation in ext/standard/info.c in PHP before 5.4.30 and 5.5.x before 5.5.14 does not ensure use of the string data type for the PHPAUTHPW, PHPAUTHTYPE, PHPAUTHUSER, and PHPSELF variables, which might allow context-dependent attackers to obtain...

K93019301: mod_auth_digest vulnerability CVE-2019-0217

Security Advisory Description In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in modauthdigest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions. CVE-2019-0217...

K04600292: Apache vulnerability CVE-2017-9789

Security Advisory Description When under stress, closing many connections, the HTTP/2 handling code in Apache httpd 2.4.26 would sometimes access memory after it has been freed, resulting in potentially erratic behavior. CVE-2017-9789 Impact There is no impact; F5 products are not affected by thi...

K20622400: Apache HTTP server vulnerability CVE-2021-39275

Security Advisory Description apescapequotes may write beyond the end of a buffer when given malicious input. No included modules pass untrusted data to these functions, but third-party / external modules may. This issue affects Apache HTTP Server 2.4.48 and earlier. CVE-2021-39275 Impact This...

K58003591: Apache HTTP server vulnerability CVE-2022-28614

Security Advisory Description The aprwrite function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an attacker can cause the server to reflect very large input using aprwrite or aprputs, such as with modluas r:puts function. Modules compiled and distributed separately from...

K67090077: Apache HTTP Server vulnerability CVE-2022-22720

Security Advisory Description 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. CVE-2022-22720 Impact Any authenticated user may exploit this vulnerability and cause a...

K41320158: Apache vulnerability CVE-2021-26690

Security Advisory Description Apache HTTP Server versions 2.4.0 to 2.4.46 A specially crafted Cookie header handled by modsession can cause a NULL pointer dereference and crash, leading to a possible Denial Of Service CVE-2021-26690 Impact There is no impact; F5 products are not affected by this...

K32071141: Apache mod_http2 vulnerability CVE-2016-8740

Security Advisory Description The modhttp2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service memory consumption via crafted CONTINUATION...

K23153696: Apache HTTPD vulnerability CVE-2020-1927

Security Advisory Description In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with modrewrite 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. CVE-2020-1927 Impact An attacker can abuse...

K22893952: Apache vulnerability CVE-2019-0190

Security Advisory Description A bug exists in the way modssl handled client renegotiations. A remote attacker could send a carefully crafted request that would cause modssl to enter a loop leading to a denial of service. This bug can be only triggered with Apache HTTP Server version 2.4.37 when...