CVE-2024-35235

June 11, 2024, 3:16 p.m.

Received
CVE has been recently published to the CVE List and has been received by the NVD.

Products

OpenPrinting CUPS

  • 2.4.8 and earlier

Source

security-advisories@github.com

Tags

CVE-2024-35235 details

Published : June 11, 2024, 3:16 p.m.
Last Modified : June 11, 2024, 3:16 p.m.

Description

OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.8 and earlier, when starting the cupsd server with a Listen configuration item pointing to a symbolic link, the cupsd process can be caused to perform an arbitrary chmod of the provided argument, providing world-writable access to the target. Given that cupsd is often running as root, this can result in the change of permission of any user or system files to be world writable. Given the aforementioned Ubuntu AppArmor context, on such systems this vulnerability is limited to those files modifiable by the cupsd process. In that specific case it was found to be possible to turn the configuration of the Listen argument into full control over the cupsd.conf and cups-files.conf configuration files. By later setting the User and Group arguments in cups-files.conf, and printing with a printer configured by PPD with a `FoomaticRIPCommandLine` argument, arbitrary user and group (not root) command execution could be achieved, which can further be used on Ubuntu systems to achieve full root command execution. Commit ff1f8a623e090dee8a8aadf12a6a4b25efac143d contains a patch for the issue.

CVSS Score

1 2 3 4.4 5 6 7 8 9 10

Weakness

Weakness Name Description

CVSS Data

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

Base Score

4.4

Exploitability Score

Impact Score

Base Severity

MEDIUM

Vector String : CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

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