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🛡️ OESA-2022-2005 — mailman (CVE-2021-34337)

🟠 CVSS 8.0 — High ✅ No Known Exploit OSV
8.0
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

mailman security update

This is GNU Mailman, a mailing list management system distributed under the terms of the GNU General Public License (GPL) version 3 or later. The name of this software is spelled 'Mailman' with a leading capital 'M' but with a lower case second `m'. Any other spelling is incorrect. Security Fix(es):

Check the REST API password in a way that is resistant to timing attacks. Using basic string equality is vulnerable to timing attacks as it will short circuit at the first wrong character. Using hmac.compare_digest avoids that issue and will take the same time, regardless of whether the value is correct or not. This is only exploitable if an attacker can talk directly to the REST API, which by default is bound to localhost.

Reference:

https://bugs.gentoo.org/828115(CVE-2021-34337)

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

OESA-2022-2005 is recorded against 1 package.

  • mailman (fixed in 3.3.2-5.oe2203)

Timeline and source

Published on 21 October 2022 and last revised on 18 August 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

References

www.openeuler.org (Advisory)
nvd.nist.gov (Advisory)

Details

Severity HIGH
CVSS Score 8.0
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source OSV
Published 2022-10-21
Updated 2026-08-20
Modified 2026-08-18
Fix URL N/A

Affected Packages

Software From version Fixed in
mailman — 3.3.2-5.oe2203

Similar Threats

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ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.

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