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Fencer Vulns
low 3.6

CVE-2009-1189 json

The _dbus_validate_signature_with_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before 1.2.14 uses incorrect logic to valid…

published 2009-04-27 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-1189

cvss
3.6
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.3%
EPSS 1.3% chance of exploitation in 30 days, percentile 71%
public exploits
0
none known

Summary

The _dbus_validate_signature_with_reason function (dbus-marshal-validate.c) in D-Bus (aka DBus) before 1.2.14 uses incorrect logic to validate a basic type, which allows remote attackers to spoof a signature via a crafted key. NOTE: this is due to an incorrect fix for CVE-2008-3834.

Patch / fix

  • dbus Debian 14, Debian 13, Debian 12 1.2.14-1

debian advisories DEBIAN-CVE-2009-1189

  • dbus RHEL 5 1.1.2-12.el5_4.1
  • dbus-x11 RHEL 5 1.1.2-12.el5_4.1
  • dbus-libs RHEL 5 1.1.2-12.el5_4.1

red hat advisories RHSA-2010:0018

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2009-1189 updated cvss 2.1

dbus: invalid fix for CVE-2008-3834

  • Red Hat Enterprise Linux (v. 5 server) dbus 1.1.2-12.el5_4.1, dbus-x11 1.1.2-12.el5_4.1, dbus-libs 1.1.2-12.el5_4.1 Red Hat Enterprise Linux Desktop (v. 5 client) dbus 1.1.2-12.el5_4.1, dbus-x11 1.1.2-12.el5_4.1, dbus-libs 1.1.2-12.el5_4.1 Red Hat Enterprise Linux Desktop Workstation (v. 5 client) dbus 1.1.2-12.el5_4.1, dbus-x11 1.1.2-12.el5_4.1, dbus-libs 1.1.2-12.el5_4.1
    fixed: vendor fix RHSA-2010:0018

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

1.32% chance of exploitation in the next 30 days, higher than 71% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • bugs.freedesktop.org http://bugs.freedesktop.org/show_bug.cgi?id=17803 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/31602 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 3.6 AV:L/AC:L/Au:N/C:N/I:P/A:P

Classification

Weakness
  • CWE-20 Improper Input Validation

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.