CVE-2009-3765

medium

Description

mutt_ssl.c in mutt 1.5.19 and 1.5.20, when OpenSSL is used, does not properly handle a '\0' character in a domain name in the subject's Common Name (CN) field of an X.509 certificate, which allows man-in-the-middle attackers to spoof arbitrary SSL servers via a crafted certificate issued by a legitimate Certification Authority, a related issue to CVE-2009-2408.

References

http://marc.info/?l=oss-security&m=125369675820512&w=2

http://marc.info/?l=oss-security&m=125198917018936&w=2

http://lists.opensuse.org/opensuse-security-announce/2009-10/msg00001.html

http://dev.mutt.org/trac/changeset/6016:dc09812e63a3/mutt_ssl.c

Details

Source: Mitre, NVD

Published: 2009-10-23

Updated: 2026-06-16

Risk Information

CVSS v2

Base Score: 6.8

Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 5.9

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity: Medium

EPSS

EPSS: 0.00343