Vulnerability Details : CVE-2023-40187
Potential exploit
FreeRDP is a free implementation of the Remote Desktop Protocol (RDP), released under the Apache license. Affected versions of the 3.x beta branch are subject to a Use-After-Free issue in the `avc420_ensure_buffer` and `avc444_ensure_buffer` functions. If the value of `piDstSize[x]` is 0, `ppYUVDstData[x]` will be freed. However, in this case `ppYUVDstData[x]` will not have been updated which leads to a Use-After-Free vulnerability. This issue has been addressed in version 3.0.0-beta3. Users of the 3.x beta releases are advised to upgrade. There are no known workarounds for this vulnerability.
Vulnerability category: Memory Corruption
Products affected by CVE-2023-40187
- cpe:2.3:a:freerdp:freerdp:3.0.0:beta1:*:*:*:*:*:*
- cpe:2.3:a:freerdp:freerdp:3.0.0:beta2:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2023-40187
0.24%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2023-40187
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST | |
|
7.3
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L |
3.9
|
3.4
|
GitHub, Inc. |
CWE ids for CVE-2023-40187
-
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.Assigned by:
- nvd@nist.gov (Primary)
- security-advisories@github.com (Secondary)
References for CVE-2023-40187
-
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-pwf9-v5p9-ch4f
Use-After-Free in avc420_ensure_buffer, avc444_ensure_buffer · Advisory · FreeRDP/FreeRDP · GitHubExploit;Vendor Advisory
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https://github.com/FreeRDP/FreeRDP/blob/5be5553e0da72178a4b94cc1ffbdace9ceb153e5/libfreerdp/codec/h264.c#L413-L427
FreeRDP/libfreerdp/codec/h264.c at 5be5553e0da72178a4b94cc1ffbdace9ceb153e5 · FreeRDP/FreeRDP · GitHubIssue Tracking
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https://security.gentoo.org/glsa/202401-16
FreeRDP: Multiple Vulnerabilities (GLSA 202401-16) — Gentoo security
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