CVE-2025-40909 (GCVE-0-2025-40909)
Vulnerability from cvelistv5
Published
2025-05-30 12:20
Modified
2025-11-03 18:09
Severity ?
5.9 (Medium) - CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
CWE
  • CWE-689 - Permission Race Condition During Resource Copy
  • CWE-426 - Untrusted Search Path
Summary
Perl threads have a working directory race condition where file operations may target unintended paths. If a directory handle is open at thread creation, the process-wide current working directory is temporarily changed in order to clone that handle for the new thread, which is visible from any third (or more) thread already running. This may lead to unintended operations such as loading code or accessing files from unexpected locations, which a local attacker may be able to exploit. The bug was introduced in commit 11a11ecf4bea72b17d250cfb43c897be1341861e and released in Perl version 5.13.6
References
9b29abf9-4ab0-4765-b253-1875cd9b441e https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1098226
9b29abf9-4ab0-4765-b253-1875cd9b441e https://github.com/Perl/perl5/commit/11a11ecf4bea72b17d250cfb43c897be1341861e
9b29abf9-4ab0-4765-b253-1875cd9b441e https://github.com/Perl/perl5/commit/918bfff86ca8d6d4e4ec5b30994451e0bd74aba9.patch
9b29abf9-4ab0-4765-b253-1875cd9b441e https://github.com/Perl/perl5/issues/10387
9b29abf9-4ab0-4765-b253-1875cd9b441e https://github.com/Perl/perl5/issues/23010
9b29abf9-4ab0-4765-b253-1875cd9b441e https://perldoc.perl.org/5.14.0/perl5136delta#Directory-handles-not-copied-to-threads
9b29abf9-4ab0-4765-b253-1875cd9b441e https://www.openwall.com/lists/oss-security/2025/05/22/2
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2025/Sep/53
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2025/Sep/54
af854a3a-2127-422b-91ae-364da2661108 http://seclists.org/fulldisclosure/2025/Sep/55
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/05/23/1
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/05/30/4
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/06/02/2
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/06/02/5
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/06/02/6
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/06/02/7
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2025/06/03/1
Impacted products
Vendor Product Version
perl perl Version: 5.13.6   < 5.41.13
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