Bug 2217330 (CVE-2015-20109)

Summary: CVE-2015-20109 glibc: buffer overflow (read past end of buffer) in internal_fnmatch=>end_pattern with "**(!()" pattern
Product: [Other] Security Response Reporter: Avinash Hanwate <ahanwate>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: ashankar, codonell, dj, fweimer, glibc-bugzilla, mnewsome, pfrankli, sipoyare
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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A vulnerability was found in the GNU C Library (glibc). The end_pattern (called from internal_fnmatch) might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by the use of the fnmatch library function with the **(!() pattern.
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Clone Of: Environment:
Last Closed: 2023-06-26 11:33:17 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2217331, 2217332, 2217333    
Bug Blocks: 2217334    

Description Avinash Hanwate 2023-06-26 05:34:35 UTC
end_pattern (called from internal_fnmatch) in the GNU C Library (aka glibc or libc6) before 2.22 might allow context-dependent attackers to cause a denial of service (application crash), as demonstrated by use of the fnmatch library function with the **(!() pattern. NOTE: this is not the same as CVE-2015-8984; also, some Linux distributions have fixed CVE-2015-8984 but have not fixed this additional fnmatch issue.

https://sourceware.org/bugzilla/show_bug.cgi?id=18036

Comment 2 Product Security DevOps Team 2023-06-26 11:33:15 UTC
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2015-20109