| Name | CVE-2020-7957 |
| Description | The 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. |
| Source | CVE (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 Package | Release | Version | Status |
|---|
| dovecot (PTS) | buster | 1:2.3.4.1-5+deb10u6 | fixed |
| buster (security) | 1:2.3.4.1-5+deb10u7 | fixed |
| bullseye | 1:2.3.13+dfsg1-2+deb11u1 | fixed |
| bookworm | 1:2.3.19.1+dfsg1-2.1 | fixed |
| sid | 1:2.3.21+dfsg1-3 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dovecot | source | (unstable) | (not affected) | | | |
Notes
- dovecot <not-affected> (Only affects 2.3.9)
https://www.openwall.com/lists/oss-security/2020/02/12/2