Bug 800598 (CVE-2012-1139)
Summary: | CVE-2012-1139 freetype: data buffer underflow in BDF parser _bdf_parse_glyphs() (#35656) | ||
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Product: | [Other] Security Response | Reporter: | Jan Lieskovsky <jlieskov> |
Component: | vulnerability | Assignee: | Red Hat Product Security <security-response-team> |
Status: | CLOSED ERRATA | QA Contact: | |
Severity: | low | Docs Contact: | |
Priority: | low | ||
Version: | unspecified | CC: | behdad, fonts-bugs, jrusnack, kevin, mkasik |
Target Milestone: | --- | Keywords: | Security |
Target Release: | --- | ||
Hardware: | All | ||
OS: | Linux | ||
Whiteboard: | |||
Fixed In Version: | Doc Type: | Bug Fix | |
Doc Text: | Story Points: | --- | |
Clone Of: | Environment: | ||
Last Closed: | 2015-02-24 21:02:22 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: | 806266, 806267, 806268, 806269, 806270, 806271, 889398 | ||
Bug Blocks: | 800639 |
Description
Jan Lieskovsky
2012-03-06 18:56:08 UTC
Added CVE as per http://www.openwall.com/lists/oss-security/2012/03/06/16 (In reply to comment #0) > An array index error, leading to out-of stack-based buffer read flaw Actually, it's not stack-based buffer, but a data segment one. Signed char variable is used to index the array, so it may lead to underflow / invalid array access up to 128 bytes before the beginning of the array. This is not very likely to trigger any crash, the problem is not reproducible with standard builds not using AddressSanitizer as was used by the reporter of the upstream bug. (In reply to comment #0) > Upstream patch: > http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=6ac022dc750d95296a6f731b9594f2e751d997fa Additional related fix: http://git.savannah.gnu.org/cgit/freetype/freetype2.git/commit/?id=37b5c92f83e5da53707b20c10ef8e0d7a24924d9 See upstream bug for the discussion. This issue has been addressed in following products: Red Hat Enterprise Linux 5 Red Hat Enterprise Linux 6 Via RHSA-2012:0467 https://rhn.redhat.com/errata/RHSA-2012-0467.html |