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CVE-2015-0245

Status Candidate

Overview

D-Bus 1.4.x through 1.6.x before 1.6.30, 1.8.x before 1.8.16, and 1.9.x before 1.9.10 does not validate the source of ActivationFailure signals, which allows local users to cause a denial of service (activation failure error returned) by leveraging a race condition involving sending an ActivationFailure signal before systemd responds.

Related Files

Ubuntu Security Notice USN-3116-1
Posted Nov 1, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3116-1 - It was discovered that DBus incorrectly validated the source of ActivationFailure signals. A local attacker could use this issue to cause a denial of service. This issue only applied to Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. It was discovered that DBus incorrectly handled certain format strings. A local attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. This issue is only exposed to unprivileged users when the fix for CVE-2015-0245 is not applied, hence this issue is only likely to affect Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. Ubuntu 16.04 LTS and Ubuntu 16.10 have been updated as a preventative measure in the event that a new attack vector for this issue is discovered. Various other issues were also addressed.

tags | advisory, denial of service, arbitrary, local
systems | linux, ubuntu
advisories | CVE-2015-0245
SHA-256 | 67101c4e6507897aa7f48d3358d4f1aa0de30612b876d3ed686adc70d4abfbe2
Mandriva Linux Security Advisory 2015-176
Posted Mar 31, 2015
Authored by Mandriva | Site mandriva.com

Mandriva Linux Security Advisory 2015-176 - Updated dbus packages fix multiple security vulnerabilities.

tags | advisory, vulnerability
systems | linux, mandriva
advisories | CVE-2014-3477, CVE-2014-3532, CVE-2014-3533, CVE-2014-3635, CVE-2014-3636, CVE-2014-3637, CVE-2014-3638, CVE-2014-3639, CVE-2014-7824, CVE-2015-0245
SHA-256 | 4be93103f6f354ef453a2dc02b3ccf964ab78327305a7f7671ec1fe2b6855df4
Gentoo Linux Security Advisory 201503-02
Posted Mar 9, 2015
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 201503-2 - A vulnerability has been found in D-Bus, possibly resulting in local Denial of Service. Versions less than 1.8.16 are affected.

tags | advisory, denial of service, local
systems | linux, gentoo
advisories | CVE-2015-0245
SHA-256 | a6a8d7ba46ea206d024636d750e906df8bd257cbc82592d349cdaa671b9762a8
Debian Security Advisory 3161-1
Posted Feb 12, 2015
Authored by Debian | Site debian.org

Debian Linux Security Advisory 3161-1 - Simon McVittie discovered a local denial of service flaw in dbus, an asynchronous inter-process communication system. On systems with systemd-style service activation, dbus-daemon does not prevent forged ActivationFailure messages from non-root processes. A malicious local user could use this flaw to trick dbus-daemon into thinking that systemd failed to activate a system service, resulting in an error reply back to the requester.

tags | advisory, denial of service, local, root
systems | linux, debian
advisories | CVE-2015-0245
SHA-256 | 2aa70c387619edf5818fcdac52d8d84392b4ab17ce8511cb0c1f79f7b11e9cc6
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