CVE-2021-39272
Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.
02 Description
Fetchmail before 6.4.22 fails to enforce STARTTLS session encryption in some circumstances, such as a certain situation with IMAP and PREAUTH.
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 0.92% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 60.1% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-30 05:05Z5 YR AGO
- Last updated
- 2024-08-04 02:06Z2 YR AGO
- Reserved
- 2021-08-18
- Assigning CNA
- mitre
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-319Cleartext Transmission of Sensitive InformationBase
- Data version
- 5.1
- Document digest
- b55e2145b0244fbb3e4c0af6c4ef12aec8bb84a32a080d9649549626efe52dc6
05 Affected products
06 References
- www.fetchmail.infohttps://www.fetchmail.info/security.html
- nostarttls.secvuln.infohttps://nostarttls.secvuln.info/
- www.openwall.comhttp://www.openwall.com/lists/oss-security/2021/08/27/3
- lists.fedoraproject.orgFEDORA-2021-ddefbdbb46https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3XJ6XLEJCEZCAM5LGGD6XBCC522QLG4/
- lists.fedoraproject.orgFEDORA-2021-9998719311https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZYCYLL73NP7ALJWSDICIVSA47ZIXWSSA/
- lists.fedoraproject.orgFEDORA-2021-e61a978fefhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VXMKSEHAQSEDCWZMAOJEGX3P3JW6QY6H/
- security.gentoo.orgGLSA-202209-14https://security.gentoo.org/glsa/202209-14
07 Fixed in
AlmaLinux 8
- fetchmail Fixed in 6.4.24-1.el8
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Arch Linux
- fetchmail Fixed in 6.4.22-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
CloudLinux 8
- fetchmail Fixed in 6.4.24-1.el8
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- fetchmail Fixed in 6.4.22-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- fetchmail Fixed in 6.4.22-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- fetchmail Fixed in 6.4.22-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- fetchmail No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- fetchmail No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- fetchmail No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.