Bug 1227268 (CVE-2024-38475)

Summary: VUL-0: CVE-2024-38475: apache2,apache2-tls13: httpd: Improper escaping of output in mod_rewrite
Product: [Novell Products] SUSE Security Incidents Reporter: SMASH SMASH <smash_bz>
Component: IncidentsAssignee: David Anes <david.anes>
Status: IN_PROGRESS --- QA Contact: Security Team bot <security-team>
Severity: Major    
Priority: P2 - High CC: andrea.mattiazzo
Version: unspecified   
Target Milestone: ---   
Hardware: Other   
OS: Other   
URL: https://smash.suse.de/issue/412507/
Whiteboard: CVSSv3.1:SUSE:CVE-2024-38475:8.2:(AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)
Found By: Security Response Team Services Priority:
Business Priority: Blocker: ---
Marketing QA Status: --- IT Deployment: ---

Description SMASH SMASH 2024-07-02 08:04:05 UTC 
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.

References:
https://httpd.apache.org/security/vulnerabilities_24.html
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2024-38475
https://seclists.org/oss-sec/2024/q3/7
https://www.cve.org/CVERecord?id=CVE-2024-38475
https://bugzilla.redhat.com/show_bug.cgi?id=2295014