CVEvulnerability
CVE-2021-29157
5.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2021-06-28
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N
- CVSS 3.1 ([email protected])
- 5.5 MEDIUM — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 2.1 LOW — AV:L/AC:L/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-22
Description
Dovecot before 2.3.15 allows ../ Path Traversal. An attacker with access to the local filesystem can trick OAuth2 authentication into using an HS256 validation key from an attacker-controlled location. This occurs during use of local JWT validation with the posix fs driver.
Affected configurations
• dovecot dovecot (>= 2.3.11 < 2.3.14.1)
• fedoraproject fedora 33
• fedoraproject fedora 34
Related
Weakness · CWE (1)
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness
References
- https://dovecot.org/security Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202107-41 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/06/28/1 Mailing List, Third Party Advisory
- https://dovecot.org/security Vendor Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202107-41 Third Party Advisory
- https://www.openwall.com/lists/oss-security/2021/06/28/1 Mailing List, Third Party Advisory