Not rated
CVE-2024-38475 Apache HTTP Server Improper Escaping of Output Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware campaigns
Not observed so far
Weakness
CWE-116
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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache HTTP Server 2.4 | 2.4.0 → 2.4.59 | No fix stated |
| http_server 2.4 | 2.4.0 → 2.4.59 | No fix stated |
| ontap_9 | Versions not published |
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