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[ GLSA 200608-06 ] Courier MTA: Denial of Service vulnerability
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PostPosted: Fri Aug 04, 2006 6:26 am    Post subject: [ GLSA 200608-06 ] Courier MTA: Denial of Service vulnerabil Reply with quote

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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