CVE-2008-3834 Denial of service in n/a

Low 2.1 Published 7 Oct 2008 Updated 7 Aug 2024

Remote attackers can cause a denial of service in applications using the D-Bus library by sending a message with a malformed signature.

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

What is CVE-2008-3834?

CVE-2008-3834 is a low-severity denial of service vulnerability in n/a, published on 7 Oct 2008. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The dbus_signature_validate function in the D-bus library (libdbus) before 1.2.4 allows remote attackers to cause a denial of service (application abort) via a message containing a malformed signature, which triggers a failed assertion error.

Weakness: CWE-20

Which versions are affected by CVE-2008-3834?

It affects 3 products.

Linux distribution packages (10)

`dbus` Red Hat:enterprise_linux:5::client	All versions	`0:1.0.0-7.el5_2.1`
`dbus-debuginfo` Red Hat:enterprise_linux:5::client	All versions	`0:1.0.0-7.el5_2.1`
`dbus-x11` Red Hat:enterprise_linux:5::client	All versions	`0:1.0.0-7.el5_2.1`
`dbus` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.0.0-7.el5_2.1`
`dbus-debuginfo` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.0.0-7.el5_2.1`
`dbus-devel` Red Hat:enterprise_linux:5::client_workstation	All versions	`0:1.0.0-7.el5_2.1`
`dbus` Red Hat:enterprise_linux:5::server	All versions	`0:1.0.0-7.el5_2.1`
`dbus-debuginfo` Red Hat:enterprise_linux:5::server	All versions	`0:1.0.0-7.el5_2.1`
`dbus-devel` Red Hat:enterprise_linux:5::server	All versions	`0:1.0.0-7.el5_2.1`
`dbus-x11` Red Hat:enterprise_linux:5::server	All versions	`0:1.0.0-7.el5_2.1`

Products include Freedesktop Dbus, Freedesktop Dbus1.0, Freedesktop Dbus1.1.0.

How do I fix CVE-2008-3834?

Upgrade to a fixed version.

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-2008-3834 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2008-3834 exists.

Public exploit code: 1 Exploit-DB entry.

Sources

Also known as DEBIAN-CVE-2008-3834, DSA-1658-1, GHSA-mwh5-h5c7-v5xw, RHSA-2009:0008.