GLSA Advocate
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Joined: 12 May 2004 Posts: 2663
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Posted: Fri Aug 04, 2006 6:26 am Post subject: [ GLSA 200608-06 ] Courier MTA: Denial of Service vulnerabil |
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Gentoo Linux Security Advisory
Title: Courier MTA: Denial of Service vulnerability (GLSA 200608-06)
Severity: normal
Exploitable: remote
Date: August 04, 2006
Bug(s): #135005
ID: 200608-06
Synopsis
Courier MTA has fixed a DoS issue related to usernames containing a "=" character.
Background
Courier MTA is an integrated mail and groupware server based on open protocols.
Affected Packages
Package: mail-mta/courier
Vulnerable: < 0.53.2
Unaffected: >= 0.53.2
Architectures: All supported architectures
Description
Courier MTA has fixed a security issue relating to usernames containing the "=" character, causing high CPU utilization.
Impact
An attacker could exploit this vulnerability by sending a specially crafted email to a mail gateway running a vulnerable version of Courier MTA.
Workaround
There is no known workaround at this time.
Resolution
All Courier MTA users should upgrade to the latest version: Code: | # emerge --sync
# emerge --ask --oneshot --verbose ">=mail-mta/courier-0.53.2" |
References
CVE-2006-2659 |
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