Improper input validation in Dovecot
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.019 (77.3th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.
Affected products
- Dovecot
- Fedoraproject Fedora — versions 30, 31
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Exploit, Mailing List, Third Party Advisory)
- cve@mitre.org (x_refsource_CONFIRM, Exploit, Mailing List, Vendor Advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
Frequently asked questions
- What is CVE-2020-7957?
- CVE-2020-7957 is a medium-severity vulnerability in Dovecot, classified under Improper Input Validation. CVSS score: 5.3/10. Published 2020-02-12.
- How severe is CVE-2020-7957?
- Medium severity. CVSS v3 base score is 5.3 out of 10.