144 results · Feed
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Unscored —
mod_sed: Read/write beyond bounds
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.
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Unscored —CVE-2022-22721 EPSS 42%
core: Possible buffer overflow with very large or unlimited LimitXMLRequestBody
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.
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Unscored —
HTTP request smuggling vulnerability in Apache HTTP Server 2.4.52 and earlier
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
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Unscored —CVE-2022-22719 EPSS 70%
mod_lua Use of uninitialized value of in r:parsebody
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.
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Unscored —CVE-2021-44224 EPSS 82%
Possible NULL dereference or SSRF in forward proxy configurations in Apache HTTP Server 2.4.51 and earlier
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 Soc…
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Unscored —
Possible buffer overflow when parsing multipart content in mod_lua of Apache HTTP Server 2.4.51 and earlier
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 af…
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Critical 9.0
mod_proxy SSRF
A crafted request uri-path can cause mod_proxy to forward the request to an origin server choosen by the remote user. This issue affects Apache HTTP Server 2.4.48 and earlier.
KEV Dec 1, 2021 -
Unscored —CVE-2021-39275 EPSS 39%
ap_escape_quotes buffer overflow
ap_escape_quotes() 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.
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Unscored —CVE-2021-36160 EPSS 64%
mod_proxy_uwsgi out of bound read
A carefully crafted request uri-path can cause mod_proxy_uwsgi to read above the allocated memory and crash (DoS). This issue affects Apache HTTP Server versions 2.4.30 to 2.4.48 (inclusive).
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Unscored —CVE-2021-34798 EPSS 65%
NULL pointer dereference in httpd core
Malformed requests may cause the server to dereference a NULL pointer. This issue affects Apache HTTP Server 2.4.48 and earlier.
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Unscored —CVE-2021-33193 EPSS 46%
Request splitting via HTTP/2 method injection and mod_proxy
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. This issue affects Apache HTTP Server 2.4.17 to 2.4.48.
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Unscored —CVE-2021-30641 EPSS 52%
Unexpected URL matching with 'MergeSlashes OFF'
Apache HTTP Server versions 2.4.39 to 2.4.46 Unexpected matching behavior with 'MergeSlashes OFF'
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Unscored —CVE-2021-26691 EPSS 68%
Apache HTTP Server mod_session response handling heap overflow
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
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Unscored —
mod_session NULL pointer dereference
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
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Unscored —CVE-2020-35452 EPSS 53%
mod_auth_digest possible stack overflow by one nul byte
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 compile…
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Unscored —CVE-2020-13950 EPSS 50%
mod_proxy_http NULL pointer dereference
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
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Unscored —CVE-2019-17567 EPSS 60%
mod_proxy_wstunnel tunneling of non Upgraded connections
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 throu…
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Unscored —
IP address spoofing when proxying using mod_remoteip and mod_rewrite For configurations using proxying with mod_remotei…
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Unscored —CVE-2020-11993 EPSS 57%
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 …
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Unscored —
Apache HTTP server 2.4.32 to 2.4.44 mod_proxy_uwsgi info disclosure and possible RCE
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Unscored —CVE-2020-9490 EPSS 89%
Apache HTTP Server versions 2.4.20 to 2.4.43. A specially crafted value for the 'Cache-Digest' header in a HTTP/2 reque…
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Unscored —CVE-2020-1927 EPSS 57%
In Apache HTTP Server 2.4.0 to 2.4.41, redirects configured with mod_rewrite that were intended to be self-referential …
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Unscored —CVE-2020-1934 EPSS 52%
In Apache HTTP Server 2.4.0 to 2.4.41, mod_proxy_ftp may use uninitialized memory when proxying to a malicious FTP serv…
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Unscored —CVE-2019-10082 EPSS 17%
In Apache HTTP Server 2.4.18-2.4.39, using fuzzed network input, the http/2 session handling could be made to read memo…
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Unscored —
In Apache HTTP Server 2.4.0-2.4.39, a limited cross-site scripting issue was reported affecting the mod_proxy error pag…
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Unscored —
In Apache HTTP server 2.4.0 to 2.4.39, Redirects configured with mod_rewrite that were intended to be self-referential …
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Unscored —CVE-2019-10081 EPSS 14%
HTTP/2 (2.4.20 through 2.4.39) very early pushes, for example configured with "H2PushResource", could lead to an overwr…
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High 7.5CVE-2019-9517 EPSS 27%
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service
Some HTTP/2 implementations are vulnerable to unconstrained interal data buffering, potentially leading to a denial of service. The attacker opens the HTTP/2 window so the peer can send without constraint; however, they leave the TCP window closed so the peer…
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Unscored —
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…
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Unscored —CVE-2019-0196 EPSS 19%
A vulnerability was found in Apache HTTP Server 2.4.17 to 2.4.38. Using fuzzed network input, the http/2 request handli…
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Unscored —CVE-2019-0220 EPSS 18%
A vulnerability was found in Apache HTTP Server 2.4.0 to 2.4.38. When the path component of a request URL contains mult…
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High 7.8
In Apache HTTP Server 2.4 releases 2.4.17 to 2.4.38, with MPM event, worker or prefork, code executing in less-privileg…
KEV Nov 3, 2021 -
Unscored —
In Apache HTTP Server 2.4 release 2.4.38 and prior, a race condition in mod_auth_digest when running in a threaded serv…
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Unscored —CVE-2018-17189 EPSS 19%
In Apache HTTP server versions 2.4.37 and prior, by sending request bodies in a slow loris way to plain resources, the …
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Unscored —CVE-2018-17199 EPSS 20%
In Apache HTTP Server 2.4 release 2.4.37 and prior, mod_session checks the session expiry time before decoding the sess…
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Unscored —CVE-2018-11763 EPSS 51%
In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, …
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Unscored —CVE-2016-4975 EPSS 20%
mod_userdir CRLF injection
Possible CRLF injection allowing HTTP response splitting attacks for sites which use mod_userdir. 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 …
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Unscored —CVE-2018-1333 EPSS 17%
DoS for HTTP/2 connections by crafted requests
By specially crafting HTTP/2 requests, workers would be allocated 60 seconds longer than necessary, leading to worker exhaustion and a denial of service. Fixed in Apache HTTP Server 2.4.34 (Affected 2.4.18-2.4.30,2.4.33).
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Unscored —
In Apache httpd 2.4.0 to 2.4.29, when mod_session is configured to forward its session data to CGI applications (Sessio…
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Unscored —CVE-2018-1312 EPSS 16%
In Apache httpd 2.2.0 to 2.4.29, when generating an HTTP Digest authentication challenge, the nonce sent to prevent rep…