CVE-2020-7957

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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Base Score
CVSS 3.x
EPSS Score
Percentile: 66%
Affected Products (NVD)
VendorProductVersion
dovecotdovecot
2.3.9 ≤
𝑥
< 2.3.9.3
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
dovecot
bookworm
1:2.3.19.1+dfsg1-2.1+deb12u1
fixed
bookworm (security)
1:2.3.19.1+dfsg1-2.1+deb12u1
fixed
bullseye
1:2.3.13+dfsg1-2+deb11u1
fixed
bullseye (security)
1:2.3.13+dfsg1-2+deb11u2
fixed
sid
1:2.3.21.1+dfsg1-1
fixed
trixie
1:2.3.21.1+dfsg1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
dovecot
bionic
not-affected
eoan
not-affected
trusty
not-affected
xenial
not-affected
openSUSE logo
openSUSE / SLES Releases
openSUSE Product
Release
dovecot23
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-backend-mysql
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-backend-pgsql
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-backend-sqlite
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-devel
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-fts
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-fts-lucene
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-fts-solr
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
dovecot23-fts-squat
suse enterprise sap 15 SP2
2.3.10-15.1
fixed
suse enterprise sap 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise sap 15 SP4
2.3.15-58.3
fixed
suse enterprise sap 15 SP7
2.3.15-150200.65.1
fixed
suse enterprise server 15 SP2
2.3.10-15.1
fixed
suse enterprise server 15 SP3
2.3.11.3-17.5.1
fixed
suse enterprise server 15 SP4
2.3.15-58.3
fixed
suse enterprise server 15 SP7
2.3.15-150200.65.1
fixed
Common Weakness Enumeration
References
http://www.openwall.com/lists/oss-security/2020/02/12/2
https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html
https://dovecot.org/security
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
http://www.openwall.com/lists/oss-security/2020/02/12/2
https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html
https://dovecot.org/security
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/