| Name | CVE-2019-10691 |
| Description | The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username. |
| 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) | jessie, jessie (lts) | 1:2.2.13-12~deb8u9 | fixed |
| stretch (security) | 1:2.2.27-3+deb9u7 | fixed |
| stretch (lts), stretch | 1:2.2.27-3+deb9u8 | fixed |
| buster, buster (lts) | 1:2.3.4.1-5+deb10u8 | fixed |
| buster (security) | 1:2.3.4.1-5+deb10u7 | fixed |
| bullseye | 1:2.3.13+dfsg1-2+deb11u1 | fixed |
| bullseye (security) | 1:2.3.13+dfsg1-2+deb11u2 | fixed |
| bookworm (security), bookworm | 1:2.3.19.1+dfsg1-2.1+deb12u1 | fixed |
| sid, trixie | 1:2.3.21.1+dfsg1-1 | fixed |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|
| dovecot | source | wheezy | (unfixed) | end-of-life | | |
| dovecot | source | jessie | (not affected) | | | |
| dovecot | source | stretch | (not affected) | | | |
| dovecot | source | (unstable) | 1:2.3.4.1-4 | | | |
Notes
[stretch] - dovecot <not-affected> (Vulnerable code not present, introduced in 2.3)
[jessie] - dovecot <not-affected> (Vulnerable code not present, introduced in 2.3)
https://www.openwall.com/lists/oss-security/2019/04/18/3