critical
9.1
CWE
116
Advisory Published
CVE Published
Advisory Published
Updated

CVE-2024-38475: Apache HTTP Server weakness in mod_rewrite when first segment of substitution matches filesystem path.

First published: Mon Jul 01 2024(Updated: )

CVE-2024-38474 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. Users are recommended to upgrade to version 2.4.60, which fixes this issue. Some RewriteRules that capture and substitute unsafely will now fail unless rewrite flag "UnsafeAllow3F" is specified. CVE-2024-38475 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.

Credit: security@apache.org security@apache.org

Affected SoftwareAffected VersionHow to fix
debian/apache2
2.4.62-1~deb11u1
2.4.61-1~deb11u1
2.4.62-1~deb12u1
2.4.62-1~deb12u2
2.4.62-3
IBM Planning Analytics Cloud<=2.1
IBM Planning Analytics Cloud<=2.0
F5 BIG-IP and BIG-IQ Centralized Management>=17.1.0<=17.1.2
17.5.0
F5 BIG-IP and BIG-IQ Centralized Management>=16.1.0<=16.1.5
F5 BIG-IP and BIG-IQ Centralized Management>=15.1.0<=15.1.10
F5 Traffix Systems Signaling Delivery Controller=5.2.0=5.1.0

Remedy

https://svn.apache.org/viewvc?view=revision&revision=1918561

Remedy

https://github.com/apache/httpd/commit/1feb5e04a4f7b5f3f13cd40f9635144319dcf24a

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Reference Links

Parent vulnerabilities

(Appears in the following advisories)

Frequently Asked Questions

  • What is the severity of CVE-2024-38475?

    CVE-2024-38475 has a high severity rating due to its potential to allow unauthorized script execution.

  • How do I fix CVE-2024-38475?

    To fix CVE-2024-38475, update to the patched versions of Apache HTTP Server 2.4.62 or later.

  • What versions of Apache HTTP Server are affected by CVE-2024-38475?

    CVE-2024-38475 affects Apache HTTP Server versions 2.4.59 and earlier.

  • What products other than Apache are impacted by CVE-2024-38475?

    CVE-2024-38475 also affects IBM Planning Analytics and specific versions of F5 BIG-IP and Traffix Systems.

  • Can CVE-2024-38475 lead to data leakage?

    Yes, CVE-2024-38475 can allow disclosure of scripts that should only be executed as server-side processes.

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