CVE-2020-7957

NameCVE-2020-7957
DescriptionThe IMAP and LMTP components in Dovecot 2.3.9 before 2.3.9.3 mishandle snippet generation when many characters must be read to compute the snippet and a trailing > character exists. This causes a denial of service in which the recipient cannot read all of their messages.
SourceCVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
dovecot (PTS)buster1:2.3.4.1-5+deb10u6fixed
buster (security)1:2.3.4.1-5+deb10u7fixed
bullseye1:2.3.13+dfsg1-2+deb11u1fixed
bookworm1:2.3.19.1+dfsg1-2.1fixed
sid, trixie1:2.3.21+dfsg1-2fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
dovecotsource(unstable)(not affected)

Notes

- dovecot <not-affected> (Only affects 2.3.9)
https://www.openwall.com/lists/oss-security/2020/02/12/2

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