Bug 1348772 (CVE-2015-8921)
| Summary: | CVE-2015-8921 libarchive: Global out of bounds read in mtree parser | ||
|---|---|---|---|
| Product: | [Other] Security Response | Reporter: | Doran Moppert <dmoppert> |
| Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
| Status: | CLOSED ERRATA | QA Contact: | |
| Severity: | low | Docs Contact: | |
| Priority: | low | ||
| Version: | unspecified | CC: | jrusnack, ndevos, praiskup, slawomir |
| Target Milestone: | --- | Keywords: | Security |
| Target Release: | --- | ||
| Hardware: | All | ||
| OS: | Linux | ||
| Whiteboard: | |||
| Fixed In Version: | libarchive 3.2.0 | Doc Type: | Bug Fix |
| Doc Text: |
A vulnerability was found in libarchive. A specially crafted mtree file could cause libarchive to read beyond a statically declared structure, potentially disclosing application memory.
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Story Points: | --- |
| Clone Of: | Environment: | ||
| Last Closed: | 2019-07-12 13:04:16 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: | 1352775, 1352776, 1353065, 1353066, 1353067, 1353068 | ||
| Bug Blocks: | 1334215 | ||
Created libarchive tracking bugs for this issue: Affects: fedora-all [bug 1352776] Affects: epel-5 [bug 1352775] (In reply to Doran Moppert from comment #0) > Upstream fix: > https://github.com/libarchive/libarchive/commit/1cbc76f For myself: that is incomplete fix, there are follow-up patches. This issue has been addressed in the following products: Red Hat Enterprise Linux 6 Via RHSA-2016:1850 https://rhn.redhat.com/errata/RHSA-2016-1850.html This issue has been addressed in the following products: Red Hat Enterprise Linux 7 Via RHSA-2016:1844 https://rhn.redhat.com/errata/RHSA-2016-1844.html 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-2015-8921 |
An out of bounds read was discovered in the mtree parser. A specially crafted mtree file could cause libarchive to read beyond a statically declared structure. The read was using memcmp(), so data could not be directly exfiltrated by an attacker. The vulnerable code appears to be reachable through other paths in libarchive-2.8, though the reproducer in the upstream ticket fails to generate a warning. Upstream bug: https://github.com/libarchive/libarchive/issues/512 Upstream fix: https://github.com/libarchive/libarchive/commit/1cbc76f