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
02 Description
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
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 2.55% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 84.9% of scored records. A rank, not a probability.
- NVD base score
- 5.9 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Low. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2018-03-02 15:00Z8 YR AGO
- Last updated
- 2024-09-16 20:17Z2 YR AGO
- Reserved
- 2017-10-08
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- Not rated by the issuing CNA
- CNA CVSS vector
- Not published by the issuing CNA
- Weaknesses
- CWE-400Uncontrolled Resource ConsumptionClass
- Data version
- 5.1
- Document digest
- ea6b1917a4f003326100865a6586e5b1a90215e47e71b7e6da13c7d4d2cf544b
05 Affected products
06 References
- usn.ubuntu.comUSN-3587-1https://usn.ubuntu.com/3587-1/
- seclists.org[oss-security] 20180301 Dovecot Security Advisory: CVE-2017-15130 TLS SNI config lookups are inefficient and can be used for DoShttp://seclists.org/oss-sec/2018/q1/205
- lists.debian.org[debian-lts-announce] 20180331 [SECURITY] [DLA 1333-1] dovecot security updatehttps://lists.debian.org/debian-lts-announce/2018/03/msg00036.html
- www.debian.orgDSA-4130https://www.debian.org/security/2018/dsa-4130
- usn.ubuntu.comUSN-3587-2https://usn.ubuntu.com/3587-2/
- bugzilla.redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1532356
- www.dovecot.org[dovecot-news] 20180228 v2.2.34 releasedhttps://www.dovecot.org/list/dovecot-news/2018-February/000370.html
07 Fixed in
Arch Linux
- dovecot Fixed in 2.3.0.1-1
Source: Arch Linux Security Tracker, the Arch Linux security team. Reformatted by exploit.cc.
Debian 12
- dovecot Fixed in 1:2.2.34-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- dovecot Fixed in 1:2.2.34-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- dovecot Fixed in 1:2.2.34-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 14.04 LTS
- dovecot Fixed in 1:2.2.9-1ubuntu2.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 16.04 LTS
- dovecot Fixed in 1:2.2.22-1ubuntu2.7
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.