high
7.5
CWE
22
Advisory Published
Updated

CVE-2021-29157: Path Traversal

First published: Mon Jun 28 2021(Updated: )

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.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Dovecot Dovecot>=2.3.11<2.3.14.1
Fedoraproject Fedora=33
Fedoraproject Fedora=34

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-29157?

    CVE-2021-29157 is a vulnerability in Dovecot before 2.3.15 that allows for path traversal.

  • What is the severity of CVE-2021-29157?

    CVE-2021-29157 has a severity rating of high, with a severity value of 5.5.

  • How does CVE-2021-29157 affect Dovecot?

    CVE-2021-29157 affects Dovecot versions up to 2.3.14.1, allowing for path traversal and potential misuse of OAuth2 authentication.

  • Is there a fix available for CVE-2021-29157?

    Yes, the fix for CVE-2021-29157 is included in Dovecot version 2.3.15.

  • Where can I find more information about CVE-2021-29157?

    You can find more information about CVE-2021-29157 at the following references: [https://dovecot.org/security](https://dovecot.org/security), [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/), [https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/](https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/)

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