5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
2.6 Low
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:H/Au:N/C:P/I:N/A:N
0.003 Low
EPSS
Percentile
70.0%
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.
OS | Version | Architecture | Package | Version | Filename |
---|---|---|---|---|---|
ubuntu | 18.04 | noarch | mutt | < 1.9.4-3ubuntu0.4 | UNKNOWN |
ubuntu | 20.04 | noarch | mutt | < 1.13.2-1ubuntu0.3 | UNKNOWN |
ubuntu | 20.10 | noarch | mutt | < 1.14.6-1ubuntu0.1 | UNKNOWN |
ubuntu | 16.04 | noarch | mutt | < 1.5.24-1ubuntu0.5 | UNKNOWN |
ubuntu | 18.04 | noarch | neomutt | < any | UNKNOWN |
ubuntu | 20.04 | noarch | neomutt | < any | UNKNOWN |
github.com/neomutt/neomutt/releases/tag/20201120
gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f
launchpad.net/bugs/cve/CVE-2020-28896
nvd.nist.gov/vuln/detail/CVE-2020-28896
security-tracker.debian.org/tracker/CVE-2020-28896
ubuntu.com/security/notices/USN-4645-1
www.cve.org/CVERecord?id=CVE-2020-28896
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
2.6 Low
CVSS2
Access Vector
NETWORK
Access Complexity
HIGH
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
NONE
AV:N/AC:H/Au:N/C:P/I:N/A:N
0.003 Low
EPSS
Percentile
70.0%