CVE-2019-15680

NameCVE-2019-15680
DescriptionTightVNC code version 1.3.10 contains null pointer dereference in HandleZlibBPP function, which results Denial of System (DoS). This attack appear to be exploitable via network connectivity.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, bugtraq, EDB, Metasploit, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, Mageia, GitHub code/issues, web search, more)
ReferencesDLA-2045-1
NVD severitymedium
Debian Bugs945364

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
italc (PTS)jessie1:2.0.2+dfsg1-2vulnerable
jessie (security)1:2.0.2+dfsg1-2+deb8u1vulnerable
stretch1:3.0.3+dfsg1-1+deb9u1vulnerable
libvncserver (PTS)jessie0.9.9+dfsg2-6.1+deb8u3vulnerable
jessie (security)0.9.9+dfsg2-6.1+deb8u7vulnerable
stretch0.9.11+dfsg-1.3~deb9u3vulnerable
stretch (security)0.9.11+dfsg-1.3~deb9u1vulnerable
buster0.9.11+dfsg-1.3+deb10u2vulnerable
bullseye0.9.12+dfsg-8vulnerable
sid0.9.12+dfsg-9vulnerable
tightvnc (PTS)jessie1.3.9-6.5vulnerable
jessie (security)1.3.9-6.5+deb8u1fixed
stretch1:1.3.9-9+deb9u1fixed
buster1:1.3.9-9+deb10u1fixed
bullseye, sid1:1.3.9-9.1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
italcsource(unstable)(unfixed)unimportant
libvncserversource(unstable)(unfixed)unimportant
tightvncsource(unstable)1:1.3.9-9.1unimportant945364
tightvncsourcebuster1:1.3.9-9deb10u1
tightvncsourcejessie1.3.9-6.5+deb8u1DLA-2045-1
tightvncsourcestretch1:1.3.9-9+deb9u1

Notes

https://www.openwall.com/lists/oss-security/2018/12/10/5
https://github.com/sunweaver/libvncserver/commit/85d00057b5daf71675462c9b175d8cb2d47cd0e1
Non-issue in libvncserver's case: https://github.com/LibVNC/libvncserver/issues/359#issuecomment-599202068

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