Bug 2024633 (CVE-2021-3998)
| Summary: | CVE-2021-3998 glibc: Unexpected return value from realpath() could leak data based on the application | ||
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| Product: | [Other] Security Response | Reporter: | Pedro Sampaio <psampaio> |
| Component: | vulnerability | Assignee: | Nobody <nobody> |
| Status: | CLOSED NOTABUG | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | medium | ||
| Version: | unspecified | CC: | aoliva, arjun.is, ashankar, bdettelb, caswilli, codonell, dhalasz, dj, fjansen, fweimer, ganandan, glibc-bugzilla, jburrell, jwong, kaycoth, kyoshida, law, mcascell, mcermak, mfabian, micjohns, pfrankli, psegedy, rth, sipoyare, sthirugn, vkrizan, vkumar, vmugicag |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | If docs needed, set a value | |
| Doc Text: |
A flaw was found in glibc. The realpath() function can mistakenly return an unexpected value, potentially leading to information leakage and disclosure of sensitive data.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2024-01-05 15:48:18 UTC | Type: | --- |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | 2032276, 2039674 | ||
| Bug Blocks: | 2024641 | ||
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Description
Pedro Sampaio
2021-11-18 14:35:19 UTC
RHEL 6, 7 and 8 are not affected by this bug as they ship an older version of glibc which does not include the vulnerable code (i.e. realpath_stk() function does not exist). Created glibc tracking bugs for this issue: Affects: fedora-all [bug 2039674] Filed upstream: https://sourceware.org/bugzilla/show_bug.cgi?id=28770 I've posted a fix for review: https://patchwork.sourceware.org/project/glibc/patch/20220113055920.3155918-1-siddhesh@sourceware.org/ |