SUSE update for fetchmail

1) Inadequate Encryption Strength

EUVDB-ID: #VU57578

Risk: Low

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2021-39272

CWE-ID: CWE-326 - Inadequate Encryption Strength

Exploit availability: No

Description

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

The vulnerability exists due to Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH. A remote attacker with ability to intercept network traffic can gain access to sensitive information.

Mitigation

Update the affected package fetchmail to the latest version.

Vulnerable software versions

SUSE Linux Enterprise Module for Desktop Applications: 15-SP2 - 15-SP3

SUSE Linux Enterprise Module for Basesystem: 15-SP2 - 15-SP3

fetchmail: before 6.3.26-20.17.1

fetchmailconf: before 6.3.26-20.17.1

fetchmail-debugsource: before 6.3.26-20.17.1

fetchmail-debuginfo: before 6.3.26-20.17.1

CPE2.3

• cpe:2.3:o:suse:suse_linux_enterprise_module_for_desktop_applications:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_desktop_applications:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP2:*:*:*:*:*:*:*
• cpe:2.3:o:suse:suse_linux_enterprise_module_for_basesystem:15-SP3:*:*:*:*:*:*:*
• cpe:2.3:a:suse:fetchmail:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:fetchmailconf:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:fetchmail-debugsource:*:*:*:*:*:suse_linux:*:*
• cpe:2.3:a:suse:fetchmail-debuginfo:*:*:*:*:*:suse_linux:*:*

External links

https://www.suse.com/support/update/announcement/2021/suse-su-20213493-1/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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