Vulnerability Details : CVE-2020-28896
Mutt before 2.0.2 and NeoMutt before 2020-11-20 did not ensure that $ssl_force_tls was processed if an IMAP server's initial server response was invalid. The connection was not properly closed, and the code could continue attempting to authenticate. This could result in authentication credentials being exposed on an unencrypted connection, or to a machine-in-the-middle.
Vulnerability category: BypassGain privilege
Products affected by CVE-2020-28896
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:mutt:mutt:*:*:*:*:*:*:*:*
- cpe:2.3:a:neomutt:neomutt:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-28896
0.49%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-28896
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
2.6
|
LOW | AV:N/AC:H/Au:N/C:P/I:N/A:N |
4.9
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N |
1.6
|
3.6
|
NIST |
CWE ids for CVE-2020-28896
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: nvd@nist.gov (Primary)
-
The product does not handle or incorrectly handles an exceptional condition.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-28896
-
https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
Ensure IMAP connection is closed after a connection error. (04b06aaa) · Commits · Mutt Project / mutt · GitLabPatch;Third Party Advisory
-
https://security.gentoo.org/glsa/202101-32
Mutt, NeoMutt: Information disclosure (GLSA 202101-32) — Gentoo securityThird Party Advisory
-
https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f
automatic post-release commit for mutt-2.0.2 (d9268908) · Commits · Mutt Project / mutt · GitLabPatch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html
[SECURITY] [DLA 2472-1] mutt security updateMailing List;Third Party Advisory
-
https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06
imap: close connection on all failures · neomutt/neomutt@9c36717 · GitHubPatch;Third Party Advisory
-
https://github.com/neomutt/neomutt/releases/tag/20201120
Release NeoMutt 2020-11-20 · neomutt/neomutt · GitHubRelease Notes;Third Party Advisory
Jump to