vulnerability
Arch Linux: Denial of service (CVE-2020-7957)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Feb 12, 2020 | Jul 11, 2025 | Nov 27, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Feb 12, 2020
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A denial of service have been found in Dovecot before 2.3.9.3, where a specially crafted e-mail can cause a mailbox to have permanently inaccessible mail, or the e-mail itself can be stuck in delivery. This happens because the snippet generation crashes if a message is large enough that message-parser returns multiple body blocks, the first block(s) don't contain the full snippet (e.g. full of whitespace) and the input ends with '>'.
Solution
arch-linux-upgrade-latest
References
- CVE-2020-7957
- https://attackerkb.com/topics/CVE-2020-7957
- URL-http://www.openwall.com/lists/oss-security/2020/02/12/2
- URL-https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html
- URL-https://dovecot.org/pipermail/dovecot-news/2020-February/000431.html
- URL-https://dovecot.org/security
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6XYT55WH372BJOXCJRKBDIFGBMPVOIDT/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NJXHOUT3FH2DJNMACSX4GHPP4MUV4UKA/
- URL-https://security.archlinux.org/ASA-202002-6
- CWE-20
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