Improper Certificate Validation Affecting dovecot package, versions <1:2.2.36-6.amzn2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-AMZN2-DOVECOT-1683119
- published27 Sept 2021
- disclosed27 Mar 2019
Introduced: 27 Mar 2019
CVE-2019-3814 (opens in a new tab)How to fix?
Upgrade Amazon-Linux:2 dovecot to version 1:2.2.36-6.amzn2 or higher.
This issue was patched in ALAS2-2020-1473.
NVD Description
Note: Versions mentioned in the description apply only to the upstream dovecot package and not the dovecot package as distributed by Amazon-Linux.
See How to fix? for Amazon-Linux:2 relevant fixed versions and status.
It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users.
References
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814
- http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-3814
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
- https://security.gentoo.org/glsa/201904-19
- https://www.dovecot.org/list/dovecot/2019-February/114575.html
- https://access.redhat.com/errata/RHSA-2019:3467
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/