How serious is CVE-2019-12749?

This vulnerability has a CVSS score of 7.1 out of 10, classified as HIGH severity. Proof-of-concept exploit code is publicly available, making this an active threat.

Is there exploit code available for CVE-2019-12749?

Yes, proof-of-concept exploit code for CVE-2019-12749 is publicly available on GitHub and security research platforms. This increases the risk of active exploitation.

Which products are affected by CVE-2019-12749?

CVE-2019-12749 affects freedesktop dbus. Check the full CVE details for specific version information.

How do I fix CVE-2019-12749?

To remediate CVE-2019-12749, check for security patches from freedesktop. Apply all available updates and security patches. If no patch is available, implement recommended workarounds or security controls to mitigate the risk.

CVE-2019-12749

High

|7.1

Exploit Available

Plain English Summary

AI-powered analysis for quick understanding

This vulnerability allows an attacker to trick a system into thinking they are a different user, potentially gaining unauthorized access to sensitive data or functions. To exploit this, the attacker needs write access to their own home directory and can manipulate a specific file to bypass authentication checks.

Technical Description

dbus before 1.10.28, 1.12.x before 1.12.16, and 1.13.x before 1.13.12, as used in DBusServer in Canonical Upstart in Ubuntu 14.04 (and in some, less common, uses of dbus-daemon), allows cookie spoofing because of symlink mishandling in the reference implementation of DBUS_COOKIE_SHA1 in the libdbus library. (This only affects the DBUS_COOKIE_SHA1 authentication mechanism.) A malicious client with write access to its own home directory could manipulate a ~/.dbus-keyrings symlink to cause a DBusServer with a different uid to read and write in unintended locations. In the worst case, this could result in the DBusServer reusing a cookie that is known to the malicious client, and treating that cookie as evidence that a subsequent client connection came from an attacker-chosen uid, allowing authentication bypass.

CVSS Vector Analysis

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

Confidentiality ImpactHigh

Integrity ImpactHigh

Availability ImpactNone

ScopeUnchanged

Vector String

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N

Exploit Resources

Search for proof-of-concept code and exploit modules

GitHub Search Exploit-DB Nuclei Templates Metasploit Vulners

Official References

NIST NVD

Est. Bounty

$1,211($1K-$5K)

Vendor Response

Grade FPatched in 2439 days

Quick Information

Published

Jun 11, 2019

over 6 years ago

Last Modified

Feb 13, 2026

7 days ago

Vendor

freedesktop

Product

dbus