Bug 2143643 (CVE-2022-39317) - CVE-2022-39317 freerdp: undefined behaviour in zgfx decoder
Summary: CVE-2022-39317 freerdp: undefined behaviour in zgfx decoder
Keywords:
Status: NEW
Alias: CVE-2022-39317
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2143654 2145139 2145140 2143655 2143656 2143657
Blocks: 2143404
TreeView+ depends on / blocked
 
Reported: 2022-11-17 13:37 UTC by TEJ RATHI
Modified: 2022-11-30 03:15 UTC (History)
1 user (show)

Fixed In Version: freerdp 2.9.0
Doc Type: If docs needed, set a value
Doc Text:
An out-of-bounds read vulnerability was discovered in FreeRDP due to missing a range check for input offset index in the ZGFX decoder. A malicious server can trick a FreeRDP based client to read out-of-bound data and try to decode it, resulting in a crash.
Clone Of:
Environment:
Last Closed:


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Description TEJ RATHI 2022-11-17 13:37:13 UTC
FreeRDP is a free remote desktop protocol library and clients. Affected versions of FreeRDP are missing a range check for input offset index in ZGFX decoder. A malicious server can trick a FreeRDP based client to read out of bound data and try to decode it. This issue has been addressed in version 2.9.0. There are no known workarounds for this issue.

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-99cm-4gw7-c8jh

Comment 1 TEJ RATHI 2022-11-17 13:50:00 UTC
Created freerdp tracking bugs for this issue:

Affects: fedora-35 [bug 2143655]
Affects: fedora-36 [bug 2143656]
Affects: fedora-37 [bug 2143657]


Created freerdp1.2 tracking bugs for this issue:

Affects: epel-7 [bug 2143654]


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