CVE-2020-4033: OOB Read in RLEDECOMPRESS in FreeRDP
First published: Mon Jun 22 2020(Updated: )
In FreeRDP before version 2.1.2, there is an out of bounds read in RLEDECOMPRESS. All FreeRDP based clients with sessions with color depth < 32 are affected. This is fixed in version 2.1.2.
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeRDP FreeRDP | <2.1.2 | |
| Fedoraproject Fedora | =31 | |
| Fedoraproject Fedora | =32 | |
| openSUSE Leap | =15.1 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =20.04 | |
| Debian Debian Linux | =10.0 | |
| debian/freerdp2 | 2.3.0+dfsg1-2+deb11u1 2.10.0+dfsg1-1 2.11.7+dfsg1-4 |
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Reference Links
- 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/0a98c450c58ec150e44781c89aa6f8e7e0f571f5
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-7rhj-856w-82p8
- https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6Y35HBHG2INICLSGCIKNAR7GCXEHQACQ/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XOZLH35OJWIQLM7FYDXAP2EAUBDXE76V/
- https://usn.ubuntu.com/4481-1/
- https://launchpad.net/bugs/cve/CVE-2020-4033
- 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://security-tracker.debian.org/tracker/CVE-2020-4033
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-4033
- https://nvd.nist.gov/vuln/detail/CVE-2020-4033
- https://ubuntu.com/security/CVE-2020-4033
Frequently Asked Questions
What is CVE-2020-4033?
CVE-2020-4033 is a vulnerability in FreeRDP before version 2.1.2 that allows an out of bounds read in RLEDECOMPRESS.
Who is affected by CVE-2020-4033?
All FreeRDP based clients with sessions with color depth < 32 are affected by CVE-2020-4033.
What is the severity of CVE-2020-4033?
CVE-2020-4033 has a severity rating of medium (6.5).
How can I fix CVE-2020-4033?
The vulnerability can be fixed by updating to FreeRDP version 2.1.2 or higher.
Where can I find more information about CVE-2020-4033?
You can find more information about CVE-2020-4033 at the MITRE CVE database, FreeRDP's GitHub security advisories, and the FreeRDP official website.
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