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[ GLSA 200901-04 ] D-Bus: Denial of Service
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PostPosted: Sun Jan 11, 2009 4:26 am    Post subject: [ GLSA 200901-04 ] D-Bus: Denial of Service Reply with quote

Gentoo Linux Security Advisory

Title: D-Bus: Denial of Service (GLSA 200901-04)
Severity: normal
Exploitable: local
Date: January 11, 2009
Bug(s): #240308
ID: 200901-04

Synopsis

An error condition can cause D-Bus to crash.

Background

D-Bus is a daemon providing a framework for applications to communicate with one another.

Affected Packages

Package: sys-apps/dbus
Vulnerable: < 1.2.3-r1
Unaffected: >= 1.2.3-r1
Architectures: All supported architectures


Description

schelte reported that the dbus_signature_validate() function can trigger a failed assertion when processing a message containing a malformed signature.

Impact

A local user could send a specially crafted message to the D-Bus daemon, leading to a Denial of Service.

Workaround

There is no known workaround at this time.

Resolution

All D-Bus users should upgrade to the latest version:
Code:
# emerge --sync
# emerge --ask --oneshot --verbose ">=sys-apps/dbus-1.2.3-r1"


References

CVE-2008-3834
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