Bug 583819 – CVE-2010-1167 fetchmail: denial of service in debug mode with multichar locales

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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

Status:	CLOSED CURRENTRELEASE

Aliases:	CVE-2010-1167

Product:	Security Response
Classification:	Other
Component:	vulnerability (Show other bugs)
Sub Component:
Version:	unspecified
Hardware:	All Linux

Priority	low Severity low
Target Milestone:	---
Target Release:	---
Assigned To:	Red Hat Product Security
QA Contact:
Docs Contact:

URL:
Whiteboard:	public=20100418,reported=20100418,sou...
Keywords:	Security

Depends On:	590556 590560
Blocks:
	Show dependency tree / graph

Reported:	2010-04-19 16:00 EDT by Vincent Danen
Modified:	2015-03-06 04:38 EST (History)
CC List:	4 users (show)

See Also:
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Story Points:	---
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Environment:
Last Closed:	2015-03-05 07:44:20 EST
Type:	---
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RHEL 7.3 requirements from Atomic Host:
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Description Vincent Danen 2010-04-19 16:00:17 EDT

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 10:40:11 EDT

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