What’s Vulnerable › Vulnerabilities

CVE-2020-11096: Global OOB read in update_read_cache_bitmap_v3_order in FreeRDP

• Severity: medium (CVSS 6.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-06-22 · updated 2026-06-17
• Weakness: CWE-125

Description

In FreeRDP before version 2.1.2, there is a global OOB read in update_read_cache_bitmap_v3_order. As a workaround, one can disable bitmap cache with -bitmap-cache (default). This is fixed in version 2.1.2.

Affected products

• Canonical Ubuntu Linux: 18.04, 20.04
• Debian Linux: 10.0
• Fedoraproject Fedora: 31, 32
• FreeRDP: before 2.1.2 — fixed in 2.1.2
• openSUSE Leap: 15.1

How to fix

Upgrade to a fixed version: FreeRDP 2.1.2. Check the vendor advisory for mitigations.

References

• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html
• http://www.freerdp.com/2020/06/22/2_1_2-released
• https://github.com/FreeRDP/FreeRDP/commit/b8beb55913471952f92770c90c372139d78c16c0
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mjw7-3mq2-996x
• https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/
• https://usn.ubuntu.com/4481-1/
• http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.html
• http://www.freerdp.com/2020/06/22/2_1_2-released
• https://github.com/FreeRDP/FreeRDP/commit/b8beb55913471952f92770c90c372139d78c16c0
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mjw7-3mq2-996x

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