CVE-2020-11044 — In FreeRDP greater than 1

In FreeRDP greater than 1.2 and before 2.0.0, a double free in update_read_cache_bitmap_v3_order crashes the client application if corrupted data from a manipulated server is parsed. This has been patched in 2.0.0.

01What is this vulnerability?

In FreeRDP greater than 1.2 and before 2.0.0, a double free in update_read_cache_bitmap_v3_order crashes the client application if corrupted data from a manipulated server is parsed. This has been patched in 2.0.0.

02Affected products

Vendor	Product	Versions
FreeRDP	FreeRDP	> 1.2, < 2.0.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-05-07T00:00:00.000Z
• Last modified: 2024-08-04T11:21:14.476Z

09References

• github.com — https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-cgqh-p732-6x2w
• github.com — https://github.com/FreeRDP/FreeRDP/issues/6013
• github.com — https://github.com/FreeRDP/FreeRDP/commit/67c2aa52b2ae0341d469071d1bc8aab91f8d2e…
• usn.ubuntu.com — https://usn.ubuntu.com/4379-1/
• lists.debian.org — https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html