CVE-2019-15681

NameCVE-2019-15681
DescriptionLibVNC commit before d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a contains a memory leak (CWE-655) in VNC server code, which allow an attacker to read stack memory and can be abused for information disclosure. Combined with another vulnerability, it can be used to leak stack memory and bypass ASLR. This attack appear to be exploitable via network connectivity. These vulnerabilities have been fixed in commit d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a.
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-1977-1, DLA-1979-1, DLA-2014-1, DLA-2045-1
NVD severitymedium
Debian Bugs943793, 945784

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+deb8u1fixed
stretch1:3.0.3+dfsg1-1vulnerable
libvncserver (PTS)jessie0.9.9+dfsg2-6.1+deb8u3vulnerable
jessie (security)0.9.9+dfsg2-6.1+deb8u6fixed
stretch (security), stretch0.9.11+dfsg-1.3~deb9u1vulnerable
buster0.9.11+dfsg-1.3vulnerable
bullseye, sid0.9.12+dfsg-7fixed
tightvnc (PTS)jessie1.3.9-6.5vulnerable
jessie (security)1.3.9-6.5+deb8u1fixed
buster, stretch1:1.3.9-9vulnerable
bullseye, sid1:1.3.9-9.1fixed
vino (PTS)jessie3.14.0-2vulnerable
jessie (security)3.14.0-2+deb8u1fixed
stretch3.22.0-1vulnerable
bullseye, sid, buster3.22.0-5vulnerable

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
italcsource(unstable)(unfixed)
italcsourcejessie1:2.0.2+dfsg1-2+deb8u1DLA-1979-1
libvncserversource(unstable)0.9.12+dfsg-3low943793
libvncserversourceexperimental0.9.12+dfsg-1
libvncserversourcejessie0.9.9+dfsg2-6.1+deb8u6DLA-1977-1
tightvncsource(unstable)1:1.3.9-9.1
tightvncsourcejessie1.3.9-6.5+deb8u1DLA-2045-1
vinosource(unstable)(unfixed)945784
vinosourcejessie3.14.0-2+deb8u1DLA-2014-1

Notes

[buster] - libvncserver <no-dsa> (Minor issue)
[stretch] - libvncserver <no-dsa> (Minor issue)
[stretch] - italc <no-dsa> (Minor issue)
[buster] - tightvnc <no-dsa> (Minor issue)
[stretch] - tightvnc <no-dsa> (Minor issue)
[buster] - vino <no-dsa> (Minor issue)
[stretch] - vino <no-dsa> (Minor issue)
https://github.com/LibVNC/libvncserver/commit/d01e1bb4246323ba6fcee3b82ef1faa9b1dac82a

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