Bug 1234887 (CVE-2015-4646) - CVE-2015-4646 squashfs-tools: stack overflow in read_fragment_table_4 due to fix for CVE-2015-4645
Summary: CVE-2015-4646 squashfs-tools: stack overflow in read_fragment_table_4 due to ...
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2015-4646
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1234888
Blocks: 1234889
TreeView+ depends on / blocked
 
Reported: 2015-06-23 12:57 UTC by Vasyl Kaigorodov
Modified: 2019-09-29 13:34 UTC (History)
6 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2015-10-09 21:01:45 UTC
Embargoed:

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Description Vasyl Kaigorodov 2015-06-23 12:57:53 UTC 
After applying CVE-2015-4645 fix, squashfs-tools become vulnerable to stack overflow issue - the stack VLA allocation of fragment_table_index[] can easily exceed RLIMIT_STACK.

Upstream bug report: https://github.com/devttys0/sasquatch/pull/5
Upstream fix: https://github.com/gcanalesb/sasquatch/commit/6777e08cc38bc780d27c69c1d8c272867b74524f
Comment 1 Vasyl Kaigorodov 2015-06-23 12:58:33 UTC 
Created squashfs-tools tracking bugs for this issue:

Affects: fedora-all [bug 1234888]
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