CVE-2020-11099 OOB Read in license_read_new_or_upgrade_license_packet in FreeRDP

What is CVE-2020-11099?

CVE-2020-11099 is a low-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 22 Jun 2020. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

In FreeRDP before version 2.1.2, there is an out of bounds read in license_read_new_or_upgrade_license_packet. A manipulated license packet can lead to out of bound reads to an internal buffer. This is fixed in version 2.1.2.

Weakness: CWE-125

Which versions are affected by CVE-2020-11099?

It affects 5 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Freerdp Freerdp, Opensuse Leap.

How do I fix CVE-2020-11099?

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-2020-11099 being exploited?

There is no known exploitation of CVE-2020-11099 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 CLEANSTART-2024-ZN33387, DEBIAN-CVE-2020-11099, GHSA-977w-866x-4v5h, UBUNTU-CVE-2020-11099.