CVE-2018-6307

NameCVE-2018-6307
DescriptionLibVNC before commit ca2a5ac02fbbadd0a21fabba779c1ea69173d10b contains heap use-after-free vulnerability in server code of file transfer extension that can result remote code execution.
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-1617-1, DLA-1979-1, DSA-4383-1
NVD severitymedium
Debian Bugs916941

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
italc (PTS)stretch1:3.0.3+dfsg1-1+deb9u1fixed
libvncserver (PTS)stretch0.9.11+dfsg-1.3~deb9u4fixed
stretch (security)0.9.11+dfsg-1.3~deb9u6fixed
buster0.9.11+dfsg-1.3+deb10u4fixed
bullseye0.9.13+dfsg-2fixed
bookworm, sid0.9.13+dfsg-3fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
italcsourcejessie1:2.0.2+dfsg1-2+deb8u1DLA-1979-1
italcsourcestretch1:3.0.3+dfsg1-1+deb9u1
italcsource(unstable)(unfixed)
libvncserversourcejessie0.9.9+dfsg2-6.1+deb8u4DLA-1617-1
libvncserversourcestretch0.9.11+dfsg-1.3~deb9u1DSA-4383-1
libvncserversource(unstable)0.9.11+dfsg-1.2916941

Notes

https://github.com/LibVNC/libvncserver/issues/241
https://github.com/LibVNC/libvncserver/commit/ca2a5ac02fbbadd0a21fabba779c1ea69173d10b
https://ics-cert.kaspersky.com/advisories/klcert-advisories/2018/12/19/klcert-18-026-libvnc-heap-use-after-free/

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