5.3
MEDIUM
CVE-2020-28896
Mutt SSL Authentication Credentials Exposure Vulnerability
Description

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.

INFO

Published Date :

Nov. 23, 2020, 7:15 p.m.

Last Modified :

Nov. 21, 2024, 5:23 a.m.

Remotely Exploitable :

Yes !

Impact Score :

3.6

Exploitability Score :

1.6
Affected Products

The following products are affected by CVE-2020-28896 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Debian debian_linux
1 Mutt mutt
1 Neomutt neomutt

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2020-28896 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2020-28896 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06
    Added Reference https://github.com/neomutt/neomutt/releases/tag/20201120
    Added Reference https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a
    Added Reference https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f
    Added Reference https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html
    Added Reference https://security.gentoo.org/glsa/202101-32
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CWE Remap by [email protected]

    Jul. 21, 2021

    Action Type Old Value New Value
    Changed CWE CWE-522 CWE-287 CWE-755
  • Modified Analysis by [email protected]

    Jan. 28, 2021

    Action Type Old Value New Value
    Changed Reference Type https://security.gentoo.org/glsa/202101-32 No Types Assigned https://security.gentoo.org/glsa/202101-32 Third Party Advisory
  • CVE Modified by [email protected]

    Jan. 27, 2021

    Action Type Old Value New Value
    Added Reference https://security.gentoo.org/glsa/202101-32 [No Types Assigned]
  • Reanalysis by [email protected]

    Dec. 14, 2020

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Removed CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V2 NIST (AV:N/AC:H/Au:N/C:P/I:N/A:N)
    Removed CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
  • Initial Analysis by [email protected]

    Dec. 08, 2020

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:L/Au:N/C:P/I:N/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    Changed Reference Type https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06 No Types Assigned https://github.com/neomutt/neomutt/commit/9c36717a3e2af1f2c1b7242035455ec8112b4b06 Patch, Third Party Advisory
    Changed Reference Type https://github.com/neomutt/neomutt/releases/tag/20201120 No Types Assigned https://github.com/neomutt/neomutt/releases/tag/20201120 Release Notes, Third Party Advisory
    Changed Reference Type https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a No Types Assigned https://gitlab.com/muttmua/mutt/-/commit/04b06aaa3e0cc0022b9b01dbca2863756ebbf59a Patch, Third Party Advisory
    Changed Reference Type https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f No Types Assigned https://gitlab.com/muttmua/mutt/-/commit/d92689088dfe80a290ec836e292376e2d9984f8f Patch, Third Party Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html Mailing List, Third Party Advisory
    Added CWE NIST CWE-522
    Added CPE Configuration OR *cpe:2.3:a:mutt:mutt:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.2 *cpe:2.3:a:neomutt:neomutt:*:*:*:*:*:*:*:* versions up to (excluding) 2020-11-20
    Added CPE Configuration OR *cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Dec. 01, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/11/msg00048.html [No Types Assigned]
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.27 }} -0.22%

score

0.67318

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability