CVE-2020-11042: Out-of-bounds Read in FreeRDP
First published: Thu May 07 2020(Updated: )
In FreeRDP greater than 1.1 and before 2.0.0, there is an out-of-bounds read in update_read_icon_info. It allows reading a attacker-defined amount of client memory (32bit unsigned -> 4GB) to an intermediate buffer. This can be used to crash the client or store information for later retrieval. This has been patched in 2.0.0.
Credit: security-advisories@github.com security-advisories@github.com security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| FreeRDP FreeRDP | >1.1.0<2.0.0 | |
| Debian Debian Linux | =9.0 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Canonical Ubuntu Linux | =19.10 | |
| 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
- https://github.com/FreeRDP/FreeRDP/commit/6b2bc41935e53b0034fe5948aeeab4f32e80f30f
- https://github.com/FreeRDP/FreeRDP/issues/6010
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9jp6-5vf2-cx2q
- https://lists.debian.org/debian-lts-announce/2020/08/msg00054.html
- https://lists.debian.org/debian-lts-announce/2023/10/msg00008.html
- https://usn.ubuntu.com/4379-1/
- https://usn.ubuntu.com/4382-1/
- https://launchpad.net/bugs/cve/CVE-2020-11042
- https://security-tracker.debian.org/tracker/CVE-2020-11042
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11042
- https://nvd.nist.gov/vuln/detail/CVE-2020-11042
- https://ubuntu.com/security/CVE-2020-11042
Frequently Asked Questions
What is the severity of CVE-2020-11042?
The severity of CVE-2020-11042 is medium (5.9).
What is the affected software for CVE-2020-11042?
The affected software for CVE-2020-11042 includes FreeRDP versions greater than 1.1 and before 2.0.0.
How can an attacker exploit CVE-2020-11042?
An attacker can exploit CVE-2020-11042 by performing an out-of-bounds read in update_read_icon_info, allowing them to read a potentially large amount of client memory.
How can I fix CVE-2020-11042?
To fix CVE-2020-11042, update FreeRDP to version 2.0.0 or above.
Where can I find more information about CVE-2020-11042?
You can find more information about CVE-2020-11042 at the following references: [CVE-2020-11042](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-11042), [FreeRDP Advisory GHSA-9jp6-5vf2-cx2q](https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-9jp6-5vf2-cx2q), [Ubuntu Security Notice USN-4379-1](https://ubuntu.com/security/notices/USN-4379-1).
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