CVE-2007-1859 Auth bypass in n/a

Medium 4.6 Published 2 May 2007 Updated 7 Aug 2024

Local users can bypass screen lock authentication in XScreenSaver when remote directory services are used and network connectivity is lost.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: Not needed
Fix: Available

What is CVE-2007-1859?

CVE-2007-1859 is a medium-severity authentication bypass vulnerability in n/a, published on 2 May 2007. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

XScreenSaver 4.10, when using a remote directory service for credentials, does not properly handle the results from the getpwuid function in drivers/lock.c when there is no network connectivity, which causes XScreenSaver to crash and unlock the screen and allows local users to bypass authentication.

Weakness: CWE-287

Which versions are affected by CVE-2007-1859?

It affects 1 product.

Linux distribution packages (20)

`xscreensaver` Red Hat:enterprise_linux:2.1::as	All versions	`1:3.33-4.rhel21.5`
`xscreensaver` Red Hat:enterprise_linux:2.1::aw	All versions	`1:3.33-4.rhel21.5`
`xscreensaver` Red Hat:enterprise_linux:2.1::es	All versions	`1:3.33-4.rhel21.5`
`xscreensaver` Red Hat:enterprise_linux:2.1::ws	All versions	`1:3.33-4.rhel21.5`
`xscreensaver` Red Hat:enterprise_linux:3::as	All versions	`1:4.10-21.el3`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:3::as	All versions	`1:4.10-21.el3`
`xscreensaver` Red Hat:enterprise_linux:3::desktop	All versions	`1:4.10-21.el3`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:3::desktop	All versions	`1:4.10-21.el3`
`xscreensaver` Red Hat:enterprise_linux:3::es	All versions	`1:4.10-21.el3`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:3::es	All versions	`1:4.10-21.el3`
`xscreensaver` Red Hat:enterprise_linux:3::ws	All versions	`1:4.10-21.el3`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:3::ws	All versions	`1:4.10-21.el3`
`xscreensaver` Red Hat:enterprise_linux:4::as	All versions	`1:4.18-5.rhel4.14`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:4::as	All versions	`1:4.18-5.rhel4.14`
`xscreensaver` Red Hat:enterprise_linux:4::desktop	All versions	`1:4.18-5.rhel4.14`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:4::desktop	All versions	`1:4.18-5.rhel4.14`
`xscreensaver` Red Hat:enterprise_linux:4::es	All versions	`1:4.18-5.rhel4.14`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:4::es	All versions	`1:4.18-5.rhel4.14`
`xscreensaver` Red Hat:enterprise_linux:4::ws	All versions	`1:4.18-5.rhel4.14`
`xscreensaver-debuginfo` Red Hat:enterprise_linux:4::ws	All versions	`1:4.18-5.rhel4.14`

Products include Xscreensaver Xscreensaver.

How do I fix CVE-2007-1859?

Apply the vendor's patch.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2007-1859 being exploited?

There is no known exploitation of CVE-2007-1859 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2007-1859, GHSA-fr4x-26r9-jx2p, RHSA-2007:0322.