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CVE-2009-1189· NVD / CVE Program· CNA redhat

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

Noroxi assessment

Priority: Monitor (action score 14/100)

  • The sources we track (CISA KEV, Exploit-DB, Metasploit, Nuclei, GitHub) show no public exploit code or exploitation in the wild.
  • Probability of exploitation in the next 30 days: 1.3% (FIRST EPSS); higher than 70.3% of all records.
  • No special conditions are required; it is repeatable.
  • Fixed version: dbus (Debian:12) 1.2.14-1; dbus (Debian:4.0) 1.0.2-1+etch3; dbus (Debian:5.0) 1.2.1-5+lenny1.

Low priority for now. Upgrade to dbus (Debian:12) 1.2.14-1; dbus (Debian:4.0) 1.0.2-1+etch3; dbus (Debian:5.0) 1.2.1-5+lenny1 or later.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

LowCVSS 3.6 · v2.0—No exploit Fix available
Published
Apr 27, 2009
Updated
Jun 16, 2026
EPSS
1.3% · 70th percentile

Report tools

JSON

Action score

14

Monitor

Low priority for now.

CVSS
14 / 40 · 3.6 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 1.3%

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • No public exploit code on record
  • A fix has been released

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2009-1189

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
freedesktopdbus

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • freedesktop dbusup to 1.2.3 inclusive
  • freedesktop dbus0.1
  • freedesktop dbus0.10
  • freedesktop dbus0.11
  • freedesktop dbus0.12
  • freedesktop dbus0.13
  • freedesktop dbus0.2
  • freedesktop dbus0.20
  • freedesktop dbus0.21
  • freedesktop dbus0.22
  • freedesktop dbus0.23
  • freedesktop dbus0.23.1
  • freedesktop dbus0.23.2
  • freedesktop dbus0.23.3
  • freedesktop dbus0.3
  • freedesktop dbus0.31
  • freedesktop dbus0.32
  • freedesktop dbus0.33
  • freedesktop dbus0.34
  • freedesktop dbus0.35

Package-level exposure

OSV and GitHub Advisory data: ecosystem, package and range. SBOM matching uses this table.

EcosystemPackageAffected rangeFix
Debian:12dbusbefore 1.2.14-11.2.14-1
Debian:4.0dbusbefore 1.0.2-1+etch31.0.2-1+etch3
Debian:5.0dbusbefore 1.2.1-5+lenny11.2.1-5+lenny1
Red Hat:enterprise_linux:5::clientdbus-libsbefore 0:1.1.2-12.el5_4.10:1.1.2-12.el5_4.1
Red Hat:enterprise_linux:5::clientdbus-x11before 0:1.1.2-12.el5_4.10:1.1.2-12.el5_4.1
Red Hat:enterprise_linux:5::client_workstationdbusbefore 0:1.1.2-12.el5_4.10:1.1.2-12.el5_4.1
Red Hat:enterprise_linux:5::client_workstationdbus-debuginfobefore 0:1.1.2-12.el5_4.10:1.1.2-12.el5_4.1
Red Hat:enterprise_linux:5::client_workstationdbus-develbefore 0:1.1.2-12.el5_4.10:1.1.2-12.el5_4.1

Same product

freedesktop: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-35512A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older bran
    31Monitor
  • CVE-2022-42012An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2.
    27Monitor
  • CVE-2022-42011An issue was discovered in D-Bus before 1.12.24, 1.13.x and 1.14.x before 1.14.4, and 1.15.x before 1.15.2.
    27Monitor

Published before and after this one in the same product

  • ← EarlierCVE-2008-3834Oct 7, 2008 · The dbus_signature_validate function in the D-bus library (libdbus) before 1.2.4 allows remote attackers to cause a denial of service (appli
    9Monitor
  • ← EarlierCVE-2008-4311Dec 9, 2008 · The default configuration of system.conf in D-Bus (aka DBus) before 1.2.6 omits the send_type attribute in certain rules, which allows local
    18Monitor
  • Later →CVE-2011-2200Jun 22, 2011 · The _dbus_header_byteswap function in dbus-marshal-header.c in D-Bus (aka DBus) 1.2.x before 1.2.28, 1.4.x before 1.4.12, and 1.5.x before 1
    18Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

Product / packageFixed versionSource
debian:dbus1.2.14-1 · Debian:12Package registry (OSV)
red hat:dbus0:1.1.2-12.el5_4.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:dbus-debuginfo0:1.1.2-12.el5_4.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:dbus-devel0:1.1.2-12.el5_4.1 · Red Hat:enterprise_linux:5::client_workstationPackage registry (OSV)
red hat:dbus-libs0:1.1.2-12.el5_4.1 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)
red hat:dbus-x110:1.1.2-12.el5_4.1 · Red Hat:enterprise_linux:5::clientPackage registry (OSV)

Exploit status

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

No dated events beyond publication.

EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • No special conditions are required; it is repeatable.

If successful

Confidentiality
none
Integrity
P · data or configuration can be modified
Availability
P · the service can be disrupted
Attack complexity
Low
Confidentiality impact
None
Integrity impact
P
Availability impact
P

Weakness class (CWE)

CWE-20 · Improper Input Validation

CVSS vector

AV:L/AC:L/Au:N/C:N/I:P/A:P

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

Change log

  1. Fix✗ → ✓

For records you follow, these changes also arrive as notifications. →

References

Show all references (11 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records