CVE-2004-2069 Denial of service in n/a

Medium 5.0 Published 5 May 2005 Updated 8 Aug 2024

Remote attackers can cause denial of service by consuming connections when OpenSSH privilege separation fails to properly terminate sessions after LoginGraceTime.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: Available

What is CVE-2004-2069?

CVE-2004-2069 is a medium-severity denial of service vulnerability in OpenSSH, published on 5 May 2005. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

sshd.c in OpenSSH 3.6.1p2 and 3.7.1p2 and possibly other versions, when using privilege separation, does not properly signal the non-privileged process when a session has been terminated after exceeding the LoginGraceTime setting, which leaves the connection open and allows remote attackers to cause a denial of service (connection consumption).

Which versions are affected by CVE-2004-2069?

It affects 1 product.

Linux distribution packages (24)

`openssh` Red Hat:enterprise_linux:3::as	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass` Red Hat:enterprise_linux:3::as	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass-gnome` Red Hat:enterprise_linux:3::as	All versions	`0:3.6.1p2-33.30.6`
`openssh-clients` Red Hat:enterprise_linux:3::as	All versions	`0:3.6.1p2-33.30.6`
`openssh-debuginfo` Red Hat:enterprise_linux:3::as	All versions	`0:3.6.1p2-33.30.6`
`openssh-server` Red Hat:enterprise_linux:3::as	All versions	`0:3.6.1p2-33.30.6`
`openssh` Red Hat:enterprise_linux:3::desktop	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass` Red Hat:enterprise_linux:3::desktop	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass-gnome` Red Hat:enterprise_linux:3::desktop	All versions	`0:3.6.1p2-33.30.6`
`openssh-clients` Red Hat:enterprise_linux:3::desktop	All versions	`0:3.6.1p2-33.30.6`
`openssh-debuginfo` Red Hat:enterprise_linux:3::desktop	All versions	`0:3.6.1p2-33.30.6`
`openssh-server` Red Hat:enterprise_linux:3::desktop	All versions	`0:3.6.1p2-33.30.6`
`openssh` Red Hat:enterprise_linux:3::es	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass` Red Hat:enterprise_linux:3::es	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass-gnome` Red Hat:enterprise_linux:3::es	All versions	`0:3.6.1p2-33.30.6`
`openssh-clients` Red Hat:enterprise_linux:3::es	All versions	`0:3.6.1p2-33.30.6`
`openssh-debuginfo` Red Hat:enterprise_linux:3::es	All versions	`0:3.6.1p2-33.30.6`
`openssh-server` Red Hat:enterprise_linux:3::es	All versions	`0:3.6.1p2-33.30.6`
`openssh` Red Hat:enterprise_linux:3::ws	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass` Red Hat:enterprise_linux:3::ws	All versions	`0:3.6.1p2-33.30.6`
`openssh-askpass-gnome` Red Hat:enterprise_linux:3::ws	All versions	`0:3.6.1p2-33.30.6`
`openssh-clients` Red Hat:enterprise_linux:3::ws	All versions	`0:3.6.1p2-33.30.6`
`openssh-debuginfo` Red Hat:enterprise_linux:3::ws	All versions	`0:3.6.1p2-33.30.6`
`openssh-server` Red Hat:enterprise_linux:3::ws	All versions	`0:3.6.1p2-33.30.6`

Products include OpenSSH.

How do I fix CVE-2004-2069?

Apply the vendor's patch.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2004-2069 being exploited?

There is no known exploitation of CVE-2004-2069 in the wild and no public exploit code.

All OpenSSH vulnerabilities

Sources

Also known as DEBIAN-CVE-2004-2069, GHSA-pwvm-3xfp-52vg, RHSA-2005:550.