CVE-2018-8784 Memory corruption in FreeRDP

What is CVE-2018-8784?

CVE-2018-8784 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 29 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-787, CWE-120

Which versions are affected by CVE-2018-8784?

It affects 2 products.

Products include Canonical Ubuntu Linux, Freerdp Freerdp.

How do I fix CVE-2018-8784?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-8784 being exploited?

There is no known exploitation of CVE-2018-8784 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2018-8784, GHSA-9392-mf3x-x7wh, UBUNTU-CVE-2018-8784.