Resource exhaustion in Dovecot
CVE-2017-15130
A denial of service flaw was found in dovecot before 2.2.34. An attacker able to generate random SNI server names could exploit TLS SNI configuration lookups, leading to excessive memory usage and the process to restart.
Vulnerability class: DoS (Denial of Service)
EPSS: 0.026 (83.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Dovecot
- The Dovecot Project — versions before 2.2.34
- Canonical Ubuntu_linux — versions 14.04, 16.04, 17.10
- Debian Debian_linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST, Mailing List, Third Party Advisory)
- secalert@redhat.com (mailing-list, x_refsource_MLIST)
- secalert@redhat.com (vendor-advisory, Third Party Advisory, x_refsource_DEBIAN)
- secalert@redhat.com (x_refsource_UBUNTU, vendor-advisory)
- secalert@redhat.com (x_refsource_CONFIRM, Third Party Advisory, Issue Tracking)
- secalert@redhat.com (Vendor Advisory, mailing-list, x_refsource_MLIST, Release Notes)
Frequently asked questions
- What is CVE-2017-15130?
- CVE-2017-15130 is a medium-severity vulnerability in Dovecot, classified under Uncontrolled Resource Consumption. CVSS score: 5.9/10. Published 2018-03-02.
- How severe is CVE-2017-15130?
- Medium severity. CVSS v3 base score is 5.9 out of 10.