REDHAT-BUG-2483470: High severity FreeRDP freerdp vulnerability
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.26.0, FreeRDP's planar bitmap decoder has an out-of-bounds heap write when decoding RLE planar data. In libfreerdp/codec/planar.c, freerdpbitmapdecompressplanar() validates the X destination coordinate nXDst against the caller-provided destination stride (nDstStep) even when it is writing into the internal temp buffer pTempData. An attacker can bypass the check with a large nDstStep and a large nXDst, causing planardecompressplanerle() to write past the end of pTempData. This vulnerability is fixed in 3.26.0.
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
FreeRDP planar bitmap decoder (libfreerdp/codec/planar.c)to a version that resolves this vulnerability.Fixed in 3.26.0
Event History
Frequently Asked Questions
What is the severity of REDHAT-BUG-2483470?
The severity of REDHAT-BUG-2483470 is rated high, with a score of 7.
How do I fix REDHAT-BUG-2483470?
To fix REDHAT-BUG-2483470, users should upgrade to FreeRDP version 3.26.0 or later.
What vulnerability does REDHAT-BUG-2483470 exploit?
REDHAT-BUG-2483470 exploits an out-of-bounds heap write vulnerability in the planar bitmap decoder of FreeRDP.
Which software is affected by REDHAT-BUG-2483470?
The affected software by REDHAT-BUG-2483470 is FreeRDP.
What is the impact of REDHAT-BUG-2483470?
The impact of REDHAT-BUG-2483470 includes potential memory corruption due to out-of-bounds writes while processing RLE planar data.