CVE-2020-7957
MEDIUMDovecot 2.3.9-2.3.9.3 - Denial of Service in IMAP and LMTP Snippet Generation
Title source: llmDescription
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.
References (5)
Core 5
Core References
Vendor Advisory x_refsource_misc
https://dovecot.org/security
Exploit, Mailing List, Third Party Advisory x_refsource_confirm
http://www.openwall.com/lists/oss-security/2020/02/12/2
Exploit, Mailing List, Vendor Advisory x_refsource_confirm
https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
Mailing List, Third Party Advisory vendor-advisory
x_refsource_fedora
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
Scores
CVSS v3
5.3
EPSS
0.0188
EPSS Percentile
76.9%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Details
CWE
CWE-20
Status
published
Products (3)
dovecot/dovecot
2.3.9 - 2.3.9.3
fedoraproject/fedora
30
fedoraproject/fedora
31
Published
Feb 12, 2020
Tracked Since
Feb 18, 2026