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Link Following Affecting dbus-devel package, versions <1:1.2.24-11.0.1.el6_10

Severity

 Recommended
0.0
high
0
10

Based on Oracle Linux security rating.

Threat Intelligence

EPSS
0.08% (38th percentile)

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  • Snyk IDSNYK-ORACLE6-DBUSDEVEL-2537123
  • published10 Apr 2022
  • disclosed11 Jun 2019
Report a new vulnerability Found a mistake?

Introduced: 11 Jun 2019

CVE-2019-12749  (opens in a new tab)
CWE-59  (opens in a new tab)

How to fix?

Upgrade Oracle:6 dbus-devel to version 1:1.2.24-11.0.1.el6_10 or higher.
This issue was patched in ELSA-2019-1726.

NVD Description

Note: Versions mentioned in the description apply only to the upstream dbus-devel package and not the dbus-devel package as distributed by Oracle. See How to fix? for Oracle:6 relevant fixed versions and status.

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.

References