CVE-2023-40181
Publication date 31 August 2023
Last updated 24 July 2024
Ubuntu priority
Cvss 3 Severity Score
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions are subject to an Integer-Underflow leading to Out-Of-Bound Read in the `zgfx_decompress_segment` function. In the context of `CopyMemory`, it's possible to read data beyond the transmitted packet range and likely cause a crash. This issue has been addressed in versions 2.11.0 and 3.0.0-beta3. Users are advised to upgrade. There are no known workarounds for this issue.
Status
Package | Ubuntu Release | Status |
---|---|---|
freerdp2 | ||
22.04 LTS jammy |
Fixed 2.6.1+dfsg1-3ubuntu2.4
|
|
20.04 LTS focal |
Fixed 2.2.0+dfsg1-0ubuntu0.20.04.5
|
|
18.04 LTS bionic |
Fixed 2.2.0+dfsg1-0ubuntu0.18.04.4+esm1
|
|
16.04 LTS xenial | Ignored end of standard support | |
14.04 LTS trusty | Ignored end of standard support |
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Get Ubuntu ProSeverity score breakdown
Parameter | Value |
---|---|
Base score | 9.1 · Critical |
Attack vector | Network |
Attack complexity | Low |
Privileges required | None |
User interaction | None |
Scope | Unchanged |
Confidentiality | High |
Integrity impact | None |
Availability impact | High |
Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H |
References
Related Ubuntu Security Notices (USN)
- USN-6401-1
- FreeRDP vulnerabilities
- 4 October 2023
Other references
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-mxp4-rx7x-h2g8
- https://github.com/FreeRDP/FreeRDP/blob/2252d53001d9ce8a452f0a0a5b1f5ed9db6d57f1/libfreerdp/codec/zgfx.c#L256-L261
- https://github.com/FreeRDP/FreeRDP/blob/2252d53001d9ce8a452f0a0a5b1f5ed9db6d57f1/libfreerdp/codec/zgfx.c#L334-L355
- https://www.cve.org/CVERecord?id=CVE-2023-40181