CVE-2024-38475

Description

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.

Reserved 2024-06-17 | Published 2024-07-01 | Updated 2025-05-02 | Assigner apache

CISA Known Exploited Vulnerability

Date added 2025-05-01 | Due date 2025-05-22

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Problem types

CWE-116 Improper Encoding or Escaping of Output

Product status

Default status
unaffected

2.4.0
affected

Timeline

2024-04-01:

reported

Credits

Orange Tsai (@orange_8361) from DEVCORE finder

References

httpd.apache.org/security/vulnerabilities_24.html vendor-advisory

security.netapp.com/advisory/ntap-20240712-0001/

cve.org (CVE-2024-38475)

nvd.nist.gov (CVE-2024-38475)

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