CVE-2024-47076

libcupsfilters's cfGetPrinterAttributes5 does not validate IPP attributes returned from an IPP server

Severity Score

8.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Track*

*SSVC

Descriptions

NVD
RedHat

CUPS is a standards-based, open-source printing system, and `libcupsfilters` contains the code of the filters of the former `cups-filters` package as library functions to be used for the data format conversion tasks needed in Printer Applications. The `cfGetPrinterAttributes5` function in `libcupsfilters` does not sanitize IPP attributes returned from an IPP server. When these IPP attributes are used, for instance, to generate a PPD file, this can lead to attacker controlled data to be provided to the rest of the CUPS system.

A flaw was found in OpenPrinting CUPS. In certain conditions, a remote attacker can add a malicious printer or directly hijack an existing printer by replacing the valid IPP URL with a malicious one. Also, it is possible that due to a lack of validation of IPP attributes returned by the server, this issue allows attacker-controlled data to be used on the rest of the CUPS system.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

High

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:Track*

Exploitation

Poc

Automatable

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-09-17 CVE Reserved
2024-09-26 CVE Published
2024-09-28 CVE Updated
2024-09-29 First Exploit
2024-09-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-20: Improper Input Validation

CAPEC

References (9)

URL	Tag	Source
https://github.com/OpenPrinting/cups-browsed/security/advisories/GHSA-rj88-6mr5-rcw8	X_refsource_misc
https://github.com/OpenPrinting/cups-filters/security/advisories/GHSA-p9rh-jxmq-gq47	X_refsource_misc
https://github.com/OpenPrinting/libcupsfilters/security/advisories/GHSA-w63j-6g73-wmg5	X_refsource_confirm
https://github.com/OpenPrinting/libppd/security/advisories/GHSA-7xfx-47qg-grp6	X_refsource_misc
https://www.cups.org	X_refsource_misc
https://www.evilsocket.net/2024/09/26/Attacking-UNIX-systems-via-CUPS-Part-I	X_refsource_misc

URL	Date	SRC
https://github.com/mutkus/CVE-2024-47076	2024-09-29

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2024-47076	2024-10-03
https://bugzilla.redhat.com/show_bug.cgi?id=2314253	2024-10-03

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
OpenPrinting Search vendor "OpenPrinting"		Libcupsfilters Search vendor "OpenPrinting" for product "Libcupsfilters"				<= 2.1 Search vendor "OpenPrinting" for product "Libcupsfilters" and version " <= 2.1"		en		Affected