FreeBSD VuXML: Documenting security issues in FreeBSD and the FreeBSD Ports Collection

Apache httpd -- Multiple vulnerabilities

Affected packages
apache24 < 2.4.60

Details

VuXML ID d7efc2ad-37af-11ef-b611-84a93843eb75
Discovery 2024-07-01
Entry 2024-07-01

The Apache httpd project reports:

DoS by Null pointer in websocket over HTTP/2 (CVE-2024-36387) (Low). Serving WebSocket protocol upgrades over a HTTP/2 connection could result in a Null Pointer dereference, leading to a crash of the server process, degrading performance.

Proxy encoding problem (CVE-2024-38473) (Moderate). Encoding problem in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows request URLs with incorrect encoding to be sent to backend services, potentially bypassing authentication via crafted requests.

Weakness with encoded question marks in backreferences (CVE-2024-38474) (Important). Substitution encoding issue in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows attacker to execute scripts in directories permitted by the configuration but not directly reachable by any URL or source disclosure of scripts meant to only to be executed as CGI.

Weakness in mod_rewrite when first segment of substitution matches filesystem path (CVE-2024-38475) (Important). Improper escaping of output in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to map URLs to filesystem locations that are permitted to be served by the server but are not intentionally/directly reachable by any URL, resulting in code execution or source code disclosure. Substitutions in server context that use a backreferences or variables as the first segment of the substitution are affected. Some unsafe RewiteRules will be broken by this change and the rewrite flag "UnsafePrefixStat" can be used to opt back in once ensuring the substitution is appropriately constrained.

may use exploitable/malicious backend application output to run local handlers via internal redirect (CVE-2024-38476) (Important). Vulnerability in core of Apache HTTP Server 2.4.59 and earlier are vulnerable to information disclosure, SSRF or local script execution via backend applications whose response headers are malicious or exploitable.

Crash resulting in Denial of Service in mod_proxy via a malicious request (CVE-2024-38477) (Important). Null pointer dereference in mod_proxy in Apache HTTP Server 2.4.59 and earlier allows an attacker to crash the server via a malicious request.

mod_rewrite proxy handler substitution (CVE-2024-39573) (Moderate). Potential SSRF in mod_rewrite in Apache HTTP Server 2.4.59 and earlier allows an attacker to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy.

References

CVE Name CVE-2024-36387
CVE Name CVE-2024-38473
CVE Name CVE-2024-38474
CVE Name CVE-2024-38475
CVE Name CVE-2024-38476
CVE Name CVE-2024-38477
CVE Name CVE-2024-39573
URL https://httpd.apache.org/security/vulnerabilities_24.html