CVE-2024-32040: fedora Integer Underflow — Fix

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients that use a version of FreeRDP prior to 3.5.0 or 2.11.6 and have connections to servers using the `NSC` codec are vulnerable to integer underflow. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, do not use the NSC codec (e.g. use `-nsc`).

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CVSS v3.1 Score

8.1

HIGH

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

Weakness Type (CWE)

CWE-191 CWE-191

Affected Products

Vendor	Product	Versions
freerdp	freerdp	< 2.11.6
freerdp	freerdp	3.0.0 — 3.5.0
fedoraproject	fedora	All
fedoraproject	fedora	All
fedoraproject	fedora	All

References

Advisories & Patches

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5 https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-23c5-cp23-h2h5

Other References

https://github.com/FreeRDP/FreeRDP/pull/10077 https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6 https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0 https://lists.fedoraproject.org/archives/list/[email protected]/message/5JL476WVJSIE7SBUKVJRVA6A52V2HOLZ/ https://lists.fedoraproject.org/archives/list/[email protected]/message/7SIS6NUNLUBOV4CPCSWKDE6T6C2W3WTR/ https://lists.fedoraproject.org/archives/list/[email protected]/message/PX3U6YPZQ7PEJBVKSBUOLWVH7DHROHY5/ https://lists.fedoraproject.org/archives/list/[email protected]/message/ZKI4UISUXYNBPN4K6TIQKDRTIJ6CDCKJ/ https://github.com/FreeRDP/FreeRDP/pull/10077 https://github.com/FreeRDP/FreeRDP/releases/tag/2.11.6 https://github.com/FreeRDP/FreeRDP/releases/tag/3.5.0

Frequently Asked Questions

What is CVE-2024-32040? +

FreeRDP is a free implementation of the Remote Desktop Protocol. FreeRDP based clients that use a version of FreeRDP prior to 3.5.0 or 2.11.6 and have connections to servers using the `NSC` codec are vulnerable to integer underflow. Versions 3.5.0 and 2.11.6 patch the issue. As a workaround, do not use the NSC codec (e.g. use `-nsc`). It has a CVSS v3.1 base score of 8.1 (HIGH).

How severe is CVE-2024-32040? +

CVE-2024-32040 has a CVSS v3.1 score of 8.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-32040? +

CVE-2024-32040 affects products from fedoraproject, freerdp, specifically: fedora, freerdp. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-32040? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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