CVE-2018-20786

NameCVE-2018-20786
Descriptionlibvterm through 0+bzr726, as used in Vim and other products, mishandles certain out-of-memory conditions, leading to a denial of service (application crash), related to screen.c, state.c, and vterm.c.
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)
NVD severitymedium

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
libvterm (PTS)stretch0~bzr684-1vulnerable
bullseye, buster0~bzr718-1vulnerable
sid0.1.2-2vulnerable
vim (PTS)jessie2:7.4.488-7+deb8u3fixed
jessie (security)2:7.4.488-7+deb8u4fixed
stretch (security), stretch2:8.0.0197-4+deb9u3fixed
buster2:8.1.0875-5fixed
bullseye, sid2:8.1.2269-1fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
libvtermsource(unstable)(unfixed)unimportant
vimsource(unstable)2:8.1.0693-1unimportant
vimsourcejessie(not affected)
vimsourcestretch(not affected)

Notes

[stretch] - vim <not-affected> (Vulnerable code introduced later)
[jessie] - vim <not-affected> (Vulnerable code introduced later)
Introduced by: https://github.com/vim/vim/commit/e4f25e4a8db2c8a8a71a4ba2a68540b3ab341e42 (v8.0.0693)
Fixed by: https://github.com/vim/vim/commit/cd929f7ba8cc5b6d6dcf35c8b34124e969fed6b8 (v8.1.0633)
MISC:https://github.com/vim/vim/issues/3711
No security impact

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