Apache Http Server vulnerabilities

CVE-2023-43622 [HIGH] CWE-400 CVE-2023-43622: An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handlin An attacker, opening a HTTP/2 connection with an initial window size of 0, was able to block handling of that connection indefinitely in Apache HTTP Server. This could be used to exhaust worker resources in the server, similar to the well known "slow loris" attack pattern. This has been fixed in version 2.4.58, so that such connection are terminated p

CVE-2023-45802 [MEDIUM] CVE-2023-45802: When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's m When a HTTP/2 stream was reset (RST frame) by a client, there was a time window were the request's memory resources were not reclaimed immediately. Instead, de-allocation was deferred to connection close. A client could send new requests and resets, keeping the connection busy and open and causing the memory footprint to keep on growing. On connection close

CVE-2023-25690 [CRITICAL] CWE-444 CVE-2023-25690: Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Reque Some mod_proxy configurations on Apache HTTP Server versions 2.4.0 through 2.4.55 allow a HTTP Request Smuggling attack. Configurations are affected when mod_proxy is enabled along with some form of RewriteRule or ProxyPassMatch in which a non-specific pattern matches some portion of the user-supplied request-target (URL) data and is then re-ins

CVE-2023-27522 [HIGH] CWE-444 CVE-2023-27522: HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects HTTP Response Smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi. This issue affects Apache HTTP Server: from 2.4.30 through 2.4.55. Special characters in the origin response header can truncate/split the response forwarded to the client.

CVE-2022-36760 [CRITICAL] CWE-444 CVE-2022-36760: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_a Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.54 and prior versions.

CVE-2006-20001 [HIGH] CWE-787 CVE-2006-20001: A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash. This issue affects Apache HTTP Server 2.4.54 and earlier.

CVE-2022-37436 [MEDIUM] CWE-113 CVE-2022-37436: Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncat Prior to Apache HTTP Server 2.4.55, a malicious backend can cause the response headers to be truncated early, resulting in some headers being incorporated into the response body. If the later headers have any security purpose, they will not be interpreted by the client.

CVE-2022-28615 [CRITICAL] CWE-190 CVE-2022-28615: Apache HTTP Server 2.4.53 and earlier may crash or disclose information due to a read beyond bounds Apache HTTP Server 2.4.53 and earlier may crash or disclose information due to a read beyond bounds in ap_strcmp_match() when provided with an extremely large input buffer. While no code distributed with the server can be coerced into such a call, third-party modules or lua scripts that use ap_strcmp_match() may hypothetically be affected.

CVE-2022-31813 [CRITICAL] CWE-348 CVE-2022-31813: Apache HTTP Server 2.4.53 and earlier may not send the X-Forwarded-* headers to the origin server ba 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. This may be used to bypass IP based authentication on the origin server/application.

CVE-2022-29404 [HIGH] CWE-770 CVE-2022-29404: In Apache HTTP Server 2.4.53 and earlier, a malicious request to a lua script that calls r:parsebody 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.

CVE-2022-30522 [HIGH] CWE-789 CVE-2022-30522: If Apache HTTP Server 2.4.53 is configured to do transformations with mod_sed in contexts where the If Apache HTTP Server 2.4.53 is configured to do transformations with mod_sed in contexts where the input to mod_sed may be very large, mod_sed may make excessively large memory allocations and trigger an abort.

CVE-2022-26377 [HIGH] CWE-444 CVE-2022-26377: Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_a Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling') vulnerability in mod_proxy_ajp of Apache HTTP Server allows an attacker to smuggle requests to the AJP server it forwards requests to. This issue affects Apache HTTP Server Apache HTTP Server 2.4 version 2.4.53 and prior versions.

CVE-2022-30556 [HIGH] CWE-200 CVE-2022-30556: Apache HTTP Server 2.4.53 and earlier may return lengths to applications calling r:wsread() that poi 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.

CVE-2022-28614 [MEDIUM] CWE-190 CVE-2022-28614: The ap_rwrite() function in Apache HTTP Server 2.4.53 and earlier may read unintended memory if an a The ap_rwrite() 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 ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function. Modules compiled and distributed separately from Apache HTTP Server that use the 'ap_rputs' function and may pass it a v

CVE-2022-28330 [MEDIUM] CWE-125 CVE-2022-28330: Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process r Apache HTTP Server 2.4.53 and earlier on Windows may read beyond bounds when configured to process requests with the mod_isapi module.

CVE-2022-22721 [CRITICAL] CWE-190 CVE-2022-22721: If LimitXMLRequestBody is set to allow request bodies larger than 350MB (defaults to 1M) on 32 bit s 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. This issue affects Apache HTTP Server 2.4.52 and earlier.

CVE-2022-22720 [CRITICAL] CWE-444 CVE-2022-22720: Apache HTTP Server 2.4.52 and earlier fails to close inbound connection when errors are encountered 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-2022-23943 [CRITICAL] CWE-190 CVE-2022-23943: Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite h Out-of-bounds Write vulnerability in mod_sed of Apache HTTP Server allows an attacker to overwrite heap memory with possibly attacker provided data. This issue affects Apache HTTP Server 2.4 version 2.4.52 and prior versions.

CVE-2022-22719 [HIGH] CWE-665 CVE-2022-22719: A carefully crafted request body can cause a read to a random memory area which could cause the proc A carefully crafted request body can cause a read to a random memory area which could cause the process to crash. This issue affects Apache HTTP Server 2.4.52 and earlier.

CVE-2021-44790 [CRITICAL] CWE-787 CVE-2021-44790: A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:pars A carefully crafted request body can cause a buffer overflow in the mod_lua multipart parser (r:parsebody() called from Lua scripts). The Apache httpd team is not aware of an exploit for the vulnerabilty though it might be possible to craft one. This issue affects Apache HTTP Server 2.4.51 and earlier.