Published: 12/02/2020 Updated: 07/11/2023

CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10

CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9

VMScore: 445

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

The IMAP and LMTP components in Dovecot 2.3.9 prior to 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.

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A denial of service have been found in Dovecot before 2393, 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 ...

oss-sec mailing list archives   By Date By Thread </form>    CVE-2020-7957: Dovecot: Specially crafted mail can crash snippet generation  <!--X-Head-of-Message- ...

CWE-20 https://dovecot.org/security http://www.openwall.com/lists/oss-security/2020/02/12/2 https://dovecot.org/pipermail/dovecot-news/2020-February/000430.html 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/https://nvd.nist.gov https://security.archlinux.org/CVE-2020-7957 http://seclists.org/oss-sec/2020/q1/72

CVE-2020-7957

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