Description
TigerVNC version prior to 1.10.1 is vulnerable to stack buffer overflow, which could be triggered from CMsgReader::readSetCursor. This vulnerability occurs due to insufficient sanitization of PixelFormat. Since remote attacker can choose offset from start of the buffer to start writing his values, exploitation of this vulnerability could potentially result into remote code execution. This attack appear to be exploitable via network connectivity.
References (4)
Core 4
Core References
Patch, Third Party Advisory x_refsource_misc
https://github.com/TigerVNC/tigervnc/releases/tag/v1.10.1
Exploit, Mailing List, Third Party Advisory mailing-list
x_refsource_mlist
https://www.openwall.com/lists/oss-security/2019/12/20/2
Patch, Third Party Advisory x_refsource_misc
https://github.com/CendioOssman/tigervnc/commit/05e28490873a861379c943bf616614b78b558b89
Mailing List, Third Party Advisory vendor-advisory
x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00039.html
Scores
CVSS v3
7.2
EPSS
0.0326
EPSS Percentile
87.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Details
CWE
CWE-754
CWE-121
CWE-787
Status
published
Products (2)
opensuse/leap
15.1
tigervnc/tigervnc
< 1.10.1
Published
Dec 26, 2019
Tracked Since
Feb 18, 2026