CVE-2019-15695

NameCVE-2019-15695
DescriptionTigerVNC 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.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs947428

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
tigervnc (PTS)stretch (security), stretch (lts), stretch1.7.0+dfsg-7+deb9u2fixed
buster1.9.0+dfsg-3+deb10u3fixed
bullseye1.11.0+dfsg-2+deb11u1fixed
bookworm1.12.0+dfsg-8fixed
sid, trixie1.14.1+dfsg-1fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
tigervncsourcestretch1.7.0+dfsg-7+deb9u1
tigervncsourcebuster1.9.0+dfsg-3+deb10u1
tigervncsource(unstable)1.10.1+dfsg-1947428

Notes

https://www.openwall.com/lists/oss-security/2019/12/20/2
https://github.com/TigerVNC/tigervnc/commit/05e28490873a861379c943bf616614b78b558b89 (master)
https://github.com/TigerVNC/tigervnc/commit/6c47340e095258a959c95db9aa2a6c715d62bf7c (v1.10.1)

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