CVE-2018-8784 — FreeRDP prior to version 2

FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.

01What is this vulnerability?

FreeRDP prior to version 2.0.0-rc4 contains a Heap-Based Buffer Overflow in function zgfx_decompress_segment() that results in a memory corruption and probably even a remote code execution.

02Affected products

Vendor	Product	Versions
Check Point Software Technologies Ltd.	FreeRDP	All versions prior to 2.0.0-rc4

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: 2018-11-29T17:00:00.000Z
• Last modified: 2024-09-17T01:55:43.145Z

09References

• www.securityfocus.com — http://www.securityfocus.com/bid/106938
• usn.ubuntu.com — https://usn.ubuntu.com/3845-1/
• research.checkpoint.com — https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients…
• github.com — https://github.com/FreeRDP/FreeRDP/commit/17c363a5162fd4dc77b1df54e48d7bd9bf6b3b…