Postgrey logging function denial of service
| postgrey-logging-dos (20108) |  Low Risk |
Description:
Postgrey is vulnerable to a denial of service attack caused by a format string vulnerability in the logging functionality. A remote attacker could send an email containing a specially-crafted sender address to cause the system to crash.
Platforms Affected:
- David Schweikert, Postgrey 1.16
- David Schweikert, Postgrey 1.17
- David Schweikert, Postgrey 1.18
- Debian, Debian Linux 3.1
- Gentoo, Linux
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
Remedy:
Upgrade to the latest version of Postgrey (1.2.1 or later), available from the Postgrey Index Web page. See References.
For Debian GNU/Linux:
Refer to DSA-1121-1 for patch, upgrade, or suggested workaround information. See References.
For Gentoo Linux:
Refer to Gentoo Linux Security Announcement GLSA 200608-18 for patch, upgrade, or suggested workaround information. See References.
Consequences:
Denial of Service
References:
- Postgrey Index Web page, Index of /tools/postgrey/pub at http://isg.ee.ethz.ch/tools/postgrey/pub/.
- Postgrey Web page, Postgrey - Postfix Greylisting Policy Server at http://isg.ee.ethz.ch/tools/postgrey/.
- BID-13193: Rob Brown Net-Server Perl Module Logging Function Format String Vulnerability
- CVE-2005-1127: Format string vulnerability in the log function in Net::Server 0.87 and earlier, as used in Postfix Greylisting Policy Server (Postgrey) 1.18 and earlier, and possibly other products, allows remote attackers to cause a denial of service (crash) via format string specifiers that are not properly handled before being sent to syslog, as demonstrated using sender addresses to Postgrey.
- DSA-1121: postgrey -- format string
- DSA-1122: libnet-server-perl -- format string
- GLSA-200608-18: Net::Server: Format string vulnerability
- MDKSA-2006:131: Updated perl-Net-Server packages fix format string vulnerability
- OSVDB ID: 15517: Net::Server Logging Function Format String DoS
- SA14958: Postgrey Format String Denial of Service Vulnerability
- SA21149: Net::Server Log Format String Vulnerability
- SUSE-SR:2005:015: SUSE Security Summary Report
- SUSE-SR:2005:016: SUSE Security Summary Report
- SUSE-SR:2005:017: SUSE Security Summary Report
Reported:
Apr 15, 2005
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