Bug 1223817 (CVE-2015-4042) - CVE-2015-4042 coreutils: possible buffer overflow in keycompare_mb()
Summary: CVE-2015-4042 coreutils: possible buffer overflow in keycompare_mb()
Keywords:
Status: CLOSED WONTFIX
Alias: CVE-2015-4042
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1223821
Blocks: 1223819
TreeView+ depends on / blocked
 
Reported: 2015-05-21 13:30 UTC by Vasyl Kaigorodov
Modified: 2023-09-07 18:41 UTC (History)
10 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2015-06-30 13:49:34 UTC
Embargoed:

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Description Vasyl Kaigorodov 2015-05-21 13:30:59 UTC 
It was reported that there might be a buffer overflow triggered in sort(1)  with data around SIZE_MAX/2.
This appears to be related to the new "SIZE_MAX - lenb - 2 < lena" test, which is not specifically associated with use of multibyte characters.

Initial report: https://bugzilla.suse.com/show_bug.cgi?id=928749
Fix: https://github.com/pixelb/coreutils/commit/bea5e36cc876ed627bb5e0eca36fdfaa6465e940
CVE assignment: http://seclists.org/oss-sec/2015/q2/502
Comment 1 Vasyl Kaigorodov 2015-05-21 13:35:40 UTC 
Created coreutils tracking bugs for this issue:

Affects: fedora-all [bug 1223821]
Comment 4 Huzaifa S. Sidhpurwala 2020-02-11 03:34:50 UTC 
Mitigation:

This flaw is triggered by using sort on specially crafted malicious data file. When using sort with trusted inputs, this flaw cannot be triggered.
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