7.1
HIGH
CVE-2019-12749
Canonical Upstart DBus Cookie Spoofing Vulnerability
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.

INFO

Published Date :

June 11, 2019, 5:29 p.m.

Last Modified :

Nov. 7, 2023, 3:03 a.m.

Source :

[email protected]

Remotely Exploitable :

No

Impact Score :

5.2

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2019-12749 has a 4 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2019-12749 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Canonical ubuntu_linux
1 Freedesktop dbus
: Total Affected Vendor : 2 | Products : 2
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-12749.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00059.html
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00092.html
http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00026.html
http://www.openwall.com/lists/oss-security/2019/06/11/2 Mailing List Mitigation Third Party Advisory
http://www.securityfocus.com/bid/108751
https://access.redhat.com/errata/RHSA-2019:1726
https://access.redhat.com/errata/RHSA-2019:2868
https://access.redhat.com/errata/RHSA-2019:2870
https://access.redhat.com/errata/RHSA-2019:3707
https://lists.debian.org/debian-lts-announce/2019/06/msg00005.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/
https://seclists.org/bugtraq/2019/Jun/16
https://security.gentoo.org/glsa/201909-08
https://usn.ubuntu.com/4015-1/ Third Party Advisory
https://usn.ubuntu.com/4015-2/
https://www.debian.org/security/2019/dsa-4462
https://www.openwall.com/lists/oss-security/2019/06/11/2 Mailing List Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-12749 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-12749 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/
  • CWE Remap by [email protected]

    Aug. 24, 2020

    Action Type Old Value New Value
    Changed CWE CWE-287 CWE-59
  • CVE Modified by [email protected]

    Nov. 06, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:3707 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 23, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:2870 [No Types Assigned]
    Added Reference https://access.redhat.com/errata/RHSA-2019:2868 [No Types Assigned]
  • CVE Modified by [email protected]

    Sep. 10, 2019

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/201909-08 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 20, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00026.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 10, 2019

    Action Type Old Value New Value
    Added Reference https://access.redhat.com/errata/RHSA-2019:1726 [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 01, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00092.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 24, 2019

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00059.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 18, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/V2CQF37O73VH2JDVX2ILX2KD2KLXLQOU/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 14, 2019

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2019/06/msg00005.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 14, 2019

    Action Type Old Value New Value
    Added Reference https://seclists.org/bugtraq/2019/Jun/16 [No Types Assigned]
    Added Reference http://www.securityfocus.com/bid/108751 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 14, 2019

    Action Type Old Value New Value
    Added Reference https://www.debian.org/security/2019/dsa-4462 [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 12, 2019

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4015-2/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 12, 2019

    Action Type Old Value New Value
    Added CVSS V2 (AV:L/AC:L/Au:N/C:P/I:P/A:N)
    Added CVSS V3 AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
    Changed Reference Type http://www.openwall.com/lists/oss-security/2019/06/11/2 No Types Assigned http://www.openwall.com/lists/oss-security/2019/06/11/2 Mailing List, Mitigation, Third Party Advisory
    Changed Reference Type https://www.openwall.com/lists/oss-security/2019/06/11/2 No Types Assigned https://www.openwall.com/lists/oss-security/2019/06/11/2 Mailing List, Third Party Advisory
    Changed Reference Type https://usn.ubuntu.com/4015-1/ No Types Assigned https://usn.ubuntu.com/4015-1/ Third Party Advisory
    Added CWE CWE-287
    Added CPE Configuration OR *cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* versions up to (excluding) 1.10.28 *cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* versions from (including) 1.12.0 up to (excluding) 1.12.16 *cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:* versions from (including) 1.13.0 up to (excluding) 1.13.12
    Added CPE Configuration OR *cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:* *cpe:2.3:o:canonical:ubuntu_linux:19.04:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Jun. 11, 2019

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4015-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jun. 11, 2019

    Action Type Old Value New Value
    Added Reference http://www.openwall.com/lists/oss-security/2019/06/11/2 [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-12749 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-12749 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.08 }} 0.03%

score

0.34248

percentile

CVSS30 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: