Gentoo update for Mutt, NeoMutt



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-28896
CWE-ID CWE-319
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 Gentoo Linux
Operating systems & Components / Operating system

Vendor Gentoo

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Cleartext transmission of sensitive information

EUVDB-ID: #VU48662

Risk: Medium

CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-28896

CWE-ID: CWE-319 - Cleartext Transmission of Sensitive Information

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to software does not ensure that $ssl_force_tls is processed if an IMAP server's initial server response is invalid. As a result, the connection is not properly closed, and the application continues authentication attempts. A remote attacker with ability to intercept traffic can perform a MitM attack and gain access to victim's credentials.

Mitigation

Update the affected packages.
mail-client/mutt to version: 2.0.2
mail-client/neomutt to version: 20201120

Vulnerable software versions

Gentoo Linux: All versions

CPE2.3 External links

https://security.gentoo.org/
https://security.gentoo.org/glsa/202101-32


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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