CVE-2020-11086 Out-of-bounds Read in FreeRDP `ntlm_read_ntlm_v2_response`

What is CVE-2020-11086?

CVE-2020-11086 is a low-severity memory corruption vulnerability in Debian Debian Linux, published on 29 May 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In FreeRDP less than or equal to 2.0.0, there is an out-of-bound read in ntlm_read_ntlm_v2_client_challenge that reads up to 28 bytes out-of-bound to an internal structure. This has been fixed in 2.1.0.

Weakness: CWE-125

Which versions are affected by CVE-2020-11086?

It affects 3 products.

Products include Debian Debian Linux, Freerdp Freerdp, Opensuse Leap.

How do I fix CVE-2020-11086?

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-2020-11086 being exploited?

There is no known exploitation of CVE-2020-11086 in the wild and no public exploit code.

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All Debian Debian Linux vulnerabilities

Sources

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

Also known as DEBIAN-CVE-2020-11086, GHSA-fg8v-w34r-c974, UBUNTU-CVE-2020-11086.