Bug 583819 (CVE-2010-1167) - CVE-2010-1167 fetchmail: denial of service in debug mode with multichar locales
Summary: CVE-2010-1167 fetchmail: denial of service in debug mode with multichar locales
Alias: CVE-2010-1167
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
Depends On: Engineering590556 Confidential590560
TreeView+ depends on / blocked
Reported: 2010-04-19 20:00 UTC by Vincent Danen
Modified: 2021-02-24 23:15 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2015-03-05 12:44:20 UTC

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Description Vincent Danen 2010-04-19 20:00:17 UTC
A flaw was reported in fetchmail where, when running in debug mode (-v -v), fetchmail prints information that was obtained from the upstream server (via POP3 UIDL list) or from message headers retrieved from it.  If printing such information fails, perhaps due to invalid multibyte character sequences in this information, fetchmail will misinterpret this condition, and believe the buffer was too small.  It will then reallocate a bigger one, with linearly increasing buffer size, and will continue to repeat this until the allocation fails, at which point fetchmail will abort.

This issue has been assigned CVE-2010-1167 and will be upstream fetchmail-SA-2010-02 [1].  A fix has already been committed upstream [2] and will be in the forthcoming 6.3.17 version.

[1] http://www.fetchmail.info/fetchmail-SA-2010-02.txt
[2] http://gitorious.org/fetchmail/fetchmail/commit/ec06293134b85876f9201d8a52b844c41581b2b3

Comment 3 Vincent Danen 2010-05-10 14:40:11 UTC


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