CVE-2021-39272

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.

References

https://nostarttls.secvuln.info/

http://www.openwall.com/lists/oss-security/2021/08/27/3

https://www.fetchmail.info/security.html

https://lists.fedoraproject.org/archives/list/[email protected]/message/L3XJ6XLEJCEZCAM5LGGD6XBCC522QLG4/

https://lists.fedoraproject.org/archives/list/[email protected]/message/ZYCYLL73NP7ALJWSDICIVSA47ZIXWSSA/

https://lists.fedoraproject.org/archives/list/[email protected]/message/VXMKSEHAQSEDCWZMAOJEGX3P3JW6QY6H/

Details

Source: MITRE

Published: 2021-08-30

Updated: 2021-09-25

Type: CWE-326

Risk Information

CVSS v2

Base Score: 4.3

Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.9

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:fetchmail:fetchmail:*:*:*:*:*:*:*:*

Tenable Plugins

View all (1 total)

IDNameProductFamilySeverity
152901FreeBSD : fetchmail -- STARTTLS bypass vulnerabilities (1d6410e8-06c1-11ec-a35d-03ca114d16d6)NessusFreeBSD Local Security Checks
medium