CVE-2018-13054 - Improper Link Resolution Before File Access ('Link Following')

Severity

57%

Complexity

86%

Confidentiality

81%

An issue was discovered in Cinnamon 1.9.2 through 3.8.6. The cinnamon-settings-users.py GUI runs as root and allows configuration of (for example) other users' icon files in _on_face_browse_menuitem_activated and _on_face_menuitem_activated. These icon files are written to the respective user's $HOME/.face location. If an unprivileged user prepares a symlink pointing to an arbitrary location, then this location will be overwritten with the icon content.

An issue was discovered in Cinnamon 1.9.2 through 3.8.6. The cinnamon-settings-users.py GUI runs as root and allows configuration of (for example) other users' icon files in _on_face_browse_menuitem_activated and _on_face_menuitem_activated. These icon files are written to the respective user's $HOME/.face location. If an unprivileged user prepares a symlink pointing to an arbitrary location, then this location will be overwritten with the icon content.

CVSS 3.0 Base Score 8.1. CVSS Attack Vector: network. CVSS Attack Complexity: low. CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H).

CVSS 2.0 Base Score 5.8. CVSS Attack Vector: network. CVSS Attack Complexity: medium. CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:P).

Overview

First reported 6 years ago

2018-07-02 14:29:00

Last updated 6 years ago

2018-09-04 17:02:00

Affected Software

Debian Linux 8.0 (Jessie)

8.0

References

https://bugzilla.suse.com/show_bug.cgi?id=1083067

Issue Tracking, Patch, Third Party Advisory

https://github.com/linuxmint/Cinnamon/pull/7683

Patch, Third Party Advisory

[debian-lts-announce] 20180713 [SECURITY] [DLA-1420-1] cinnamon security update

Mailing List, Third Party Advisory

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