cpe:2.3:a:apache:http_server:2.0:*:*:*:*:*:*:*
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.
Max CVSS
9.8
EPSS Score
1.06%
Published
2022-06-09
Updated
2022-08-19
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.
Max CVSS
9.1
EPSS Score
1.48%
Published
2022-06-09
Updated
2022-08-24
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.
Max CVSS
9.1
EPSS Score
0.45%
Published
2022-03-14
Updated
2022-11-02
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
Max CVSS
9.8
EPSS Score
1.56%
Published
2022-03-14
Updated
2022-11-02
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.
Max CVSS
9.8
EPSS Score
9.75%
Published
2021-12-20
Updated
2023-04-03

CVE-2021-40438

Known exploited
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.
Max CVSS
9.0
EPSS Score
97.41%
Published
2021-09-16
Updated
2022-10-05
CISA KEV Added
2021-12-01
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.
Max CVSS
9.8
EPSS Score
0.58%
Published
2021-09-16
Updated
2022-10-05
In Apache httpd before 2.2.34 and 2.4.x before 2.4.27, the value placeholder in [Proxy-]Authorization headers of type 'Digest' was not initialized or reset before or between successive key=value assignments by mod_auth_digest. Providing an initial key with no '=' assignment could reflect the stale value of uninitialized pool memory used by the prior request, leading to leakage of potentially confidential information, and a segfault in other cases resulting in denial of service.
Max CVSS
9.1
EPSS Score
46.78%
Published
2017-07-13
Updated
2021-06-06
8 vulnerabilities found
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