Resource exhaustion in Dovecot
CVE-2017-15132
A flaw was found in dovecot 2.0 up to 2.2.33 and 2.3.0. An abort of SASL authentication results in a memory leak in dovecot's auth client used by login processes. The leak has impact in high performance configuration where same login processes are reused and can cause the process to crash due to memory exhaustion.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.031 (87.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000
Affected products
- Dovecot — versions 2.3.0
- The Dovecot Project — versions 2.0 up to 2.2.33 and 2.3.0
- Canonical Ubuntu Linux — versions 12.04, 14.04, 16.04
- Debian Linux — versions 7.0, 8.0, 9.0
Weakness classification (CWE)
References
- github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch (Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/03/msg00036.html (mailing-list, Mailing List, Third Party Advisory)
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- www.debian.org/security/2018/dsa-4130 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3556-1/ (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/3556-2/ (vendor-advisory, Third Party Advisory)
- www.dovecot.org/list/dovecot-news/2018-February/000370.html (Vendor Advisory, mailing-list)
Frequently asked questions
- What is CVE-2017-15132?
- CVE-2017-15132 is a high-severity vulnerability in Dovecot, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2018-01-25.
- How severe is CVE-2017-15132?
- High severity. CVSS v3 base score is 7.5 out of 10.