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CVE-2008-3889

Status Candidate

Overview

Postfix 2.4 before 2.4.9, 2.5 before 2.5.5, and 2.6 before 2.6-20080902, when used with the Linux 2.6 kernel, leaks epoll file descriptors during execution of "non-Postfix" commands, which allows local users to cause a denial of service (application slowdown or exit) via a crafted command, as demonstrated by a command in a .forward file.

Related Files

Gentoo Linux Security Advisory 200809-9
Posted Sep 20, 2008
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory GLSA 200809-09 - A memory leak in Postfix might allow local users to cause a Denial of Service. It has been discovered than Postfix leaks an epoll file descriptor when executing external commands, e.g. user-controlled $HOME/.forward or $HOME/.procmailrc files. NOTE: This vulnerability only concerns Postfix instances running on Linux 2.6 kernels. Versions less than 2.4.9 are affected.

tags | advisory, denial of service, kernel, local, memory leak
systems | linux, gentoo
advisories | CVE-2008-3889
SHA-256 | 9c8335b7774c98cfeaed558a9d598717ed37fac34ab4a3fb906fe1da12090605
CVE-2008-4042-exploit.c
Posted Sep 16, 2008
Authored by Albert Sellares, Marc Morata Fite | Site wekk.net

Denial of service exploit for Postfix versions 2.4 before 2.4.9, 2.5 before 2.5.5, and 2.6 before 2.6-20080902, when used with the Linux 2.6 kernel.

tags | exploit, denial of service, kernel
systems | linux
advisories | CVE-2008-3889, CVE-2008-4042
SHA-256 | be4de29c579743f90fbea63e452a1da0c2f608677d7e66f78cf782b3ccc6d70c
Ubuntu Security Notice 642-1
Posted Sep 11, 2008
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 642-1 - Wietse Venema discovered that Postfix leaked internal file descriptors when executing non-Postfix commands. A local attacker could exploit this to cause Postfix to run out of descriptors, leading to a denial of service.

tags | advisory, denial of service, local
systems | linux, ubuntu
advisories | CVE-2008-3889
SHA-256 | 54dd3faef0f4b4b46c11b6f36386f40d327edfe428a23704a0344ba4238cf8ac
Mandriva Linux Security Advisory 2008-190
Posted Sep 11, 2008
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory - A vulnerability in Postfix 2.4 and later was discovered, when running on Linux kernel 2.6, where a local user could cause a denial of service due to Postfix leaking the epoll file descriptor when executing non-Postfix commands. The updated packages have been patched to correct this issue.

tags | advisory, denial of service, kernel, local
systems | linux, mandriva
advisories | CVE-2008-3889
SHA-256 | 30dd0c3382d6efc30813809a595c32f255440c730554a3a912327ca876a4e2df
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