openEuler update for mutt

1) Cleartext transmission of sensitive information

EUVDB-ID: #VU48662

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

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

Install updates from vendor's repository.

Vulnerable software versions

openEuler: 20.03 LTS - 20.03 LTS SP1

mutt-help: before 1.10.1-3

mutt-debugsource: before 1.10.1-3

mutt-debuginfo: before 1.10.1-3

mutt: before 1.10.1-3

External links

http://www.openeuler.org/en/security/security-bulletins/detail/?id=openEuler-SA-2021-1005

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.