vulnerability
Arch Linux: Information disclosure (CVE-2021-29157)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 2 | (AV:L/AC:L/Au:N/C:P/I:N/A:N) | Jun 28, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
2
CVSS
(AV:L/AC:L/Au:N/C:P/I:N/A:N)
Published
Jun 28, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue has been found in Dovecot before version 2.3.14.1. The kid and azp fields in JWT tokens are not correctly escaped. This may be used to supply attacker controlled keys to validate tokens in some configurations. The attack requires an attacker to be able to write files to the local disk. As a result, a local attacker can login as any user and access their emails.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-29157
- https://attackerkb.com/topics/CVE-2021-29157
- URL-https://dovecot.org/security
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/
- URL-https://security.archlinux.org/ASA-202106-56
- URL-https://security.gentoo.org/glsa/202107-41
- URL-https://www.openwall.com/lists/oss-security/2021/06/28/1
- CWE-22
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