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  • Results Type: Overview
  • Keyword (text search): cpe:2.3:a:apache:http_server:2.4.27:*:*:*:*:*:*:*
There are 30 matching records.
Displaying matches 1 through 20.
Vuln ID Summary CVSS Severity
CVE-2021-26691

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

Published: June 10, 2021; 3:15:07 AM -0400
V3.1: 9.8 CRITICAL
V2.0: 7.5 HIGH
CVE-2021-26690

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

Published: June 10, 2021; 3:15:07 AM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-35452

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. 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

Published: June 10, 2021; 3:15:07 AM -0400
V3.1: 7.3 HIGH
V2.0: 6.8 MEDIUM
CVE-2020-13938

Apache HTTP Server versions 2.4.0 to 2.4.46 Unprivileged local users can stop httpd on Windows

Published: June 10, 2021; 3:15:07 AM -0400
V3.1: 5.5 MEDIUM
V2.0: 2.1 LOW
CVE-2019-17567

Apache HTTP Server versions 2.4.6 to 2.4.46 mod_proxy_wstunnel configured on an URL that is not necessarily Upgraded by the origin server was tunneling the whole connection regardless, thus allowing for subsequent requests on the same connection to pass through with no HTTP validation, authentication or authorization possibly configured.

Published: June 10, 2021; 3:15:07 AM -0400
V3.1: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2020-9490

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. Configuring the HTTP/2 feature via "H2Push off" will mitigate this vulnerability for unpatched servers.

Published: August 07, 2020; 12:15:12 PM -0400
V3.1: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2020-11993

Apache HTTP Server versions 2.4.20 to 2.4.43 When trace/debug was enabled for the HTTP/2 module and on certain traffic edge patterns, logging statements were made on the wrong connection, causing concurrent use of memory pools. Configuring the LogLevel of mod_http2 above "info" will mitigate this vulnerability for unpatched servers.

Published: August 07, 2020; 12:15:11 PM -0400
V3.1: 7.5 HIGH
V2.0: 4.3 MEDIUM
CVE-2020-1927

In Apache HTTP Server 2.4.0 to 2.4.41, 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.

Published: April 01, 2020; 8:15:13 PM -0400
V3.1: 6.1 MEDIUM
V2.0: 5.8 MEDIUM
CVE-2020-1934

In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP server.

Published: April 01, 2020; 4:15:15 PM -0400
V3.1: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2019-10092

In Apache HTTP Server 2.4.0-2.4.39, a limited cross-site scripting issue was reported affecting the mod_proxy error page. An attacker could cause the link on the error page to be malformed and instead point to a page of their choice. 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.

Published: September 26, 2019; 12:15:10 PM -0400
V3.1: 6.1 MEDIUM
V2.0: 4.3 MEDIUM
CVE-2019-10082

In Apache HTTP Server 2.4.18-2.4.39, using fuzzed network input, the http/2 session handling could be made to read memory after being freed, during connection shutdown.

Published: September 26, 2019; 12:15:10 PM -0400
V3.1: 9.1 CRITICAL
V2.0: 6.4 MEDIUM
CVE-2019-10098

In Apache HTTP server 2.4.0 to 2.4.39, Redirects configured with mod_rewrite that were intended to be self-referential might be fooled by encoded newlines and redirect instead to an unexpected URL within the request URL.

Published: September 25, 2019; 1:15:10 PM -0400
V3.1: 6.1 MEDIUM
V2.0: 5.8 MEDIUM
CVE-2019-10081

HTTP/2 (2.4.20 through 2.4.39) very early pushes, for example configured with "H2PushResource", could lead to an overwrite of memory in the pushing request's pool, leading to crashes. The memory copied is that of the configured push link header values, not data supplied by the client.

Published: August 15, 2019; 6:15:12 PM -0400
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2019-0197

A vulnerability was found in Apache HTTP Server 2.4.34 to 2.4.38. 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. Server that never enabled the h2 protocol or that only enabled it for https: and did not set "H2Upgrade on" are unaffected by this issue.

Published: June 11, 2019; 6:29:04 PM -0400
V3.0: 4.2 MEDIUM
V2.0: 4.9 MEDIUM
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 incorrectly.

Published: June 11, 2019; 6:29:03 PM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2019-0220

A vulnerability was found in Apache HTTP Server 2.4.0 to 2.4.38. When the path component of a request URL contains multiple consecutive slashes ('/'), directives such as LocationMatch and RewriteRule must account for duplicates in regular expressions while other aspects of the servers processing will implicitly collapse them.

Published: June 11, 2019; 5:29:00 PM -0400
V3.0: 5.3 MEDIUM
V2.0: 5.0 MEDIUM
CVE-2019-0211

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. Non-Unix systems are not affected.

Published: April 08, 2019; 6:29:00 PM -0400
V3.0: 7.8 HIGH
V2.0: 7.2 HIGH
CVE-2019-0217

In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded server could allow a user with valid credentials to authenticate using another username, bypassing configured access control restrictions.

Published: April 08, 2019; 5:29:00 PM -0400
V3.1: 7.5 HIGH
V2.0: 6.0 MEDIUM
CVE-2018-17199

In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the session. This causes session expiry time to be ignored for mod_session_cookie sessions since the expiry time is loaded when the session is decoded.

Published: January 30, 2019; 5:29:00 PM -0500
V3.0: 7.5 HIGH
V2.0: 5.0 MEDIUM
CVE-2018-17189

In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the h2 stream for that request unnecessarily occupied a server thread cleaning up that incoming data. This affects only HTTP/2 (mod_http2) connections.

Published: January 30, 2019; 5:29:00 PM -0500
V3.1: 5.3 MEDIUM
V2.0: 5.0 MEDIUM