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Fencer Vulns
medium 5.9

CVE-2017-15130 json

A denial of service flaw was found in dovecot before 2.2.34.

published 2018-03-02 8 y ago modified 2026-06-17 4 mo ago also EUVD-2017-6591

cvss
5.9
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
2.6%
EPSS 2.6% chance of exploitation in 30 days, percentile 85%
public exploits
0
none known

Summary

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.

Patch / fix

  • dovecot dovecot 2.2.34
  • dovecot Debian 14, Debian 13, Debian 12 1:2.2.34-1

debian advisories DEBIAN-CVE-2017-15130

  • dovecot Ubuntu 14.04 LTS 1:2.2.9-1ubuntu2.4
  • dovecot Ubuntu 16.04 LTS 1:2.2.22-1ubuntu2.7

ubuntu advisories UBUNTU-CVE-2017-15130

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • dovecot22 SLES 12 SP3, SLES 12 SP2-BCL, SLE Software Development Kit 12 SP3 +8 more 2.2.31-19.11.1

suse advisories SUSE-SU-2018:2632-2SUSE-SU-2018:2632-1

  • dovecot24 openSUSE Tumbleweed 2.4.0-1.1
  • dovecot23 openSUSE Tumbleweed 2.3.16-1.6

opensuse advisories openSUSE-SU-2025:14715-1openSUSE-SU-2024:10726-1

  • dovecot Alpine 3.24, Alpine 3.23, Alpine 3.22 +14 more 2.3.1-r0
  • dovecot Alpine 3.7 2.2.34-r0

alpine advisories ALPINE-CVE-2017-15130

Alpine secdb © Alpine Linux, from https://secdb.alpinelinux.org via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • dovecot Arch Linux 2.3.0.1-1

arch linux advisories AVG-645

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-15130 updated cvss 3.7

dovecot: TLS SNI config lookups are inefficient and can be used for DoS

  • Red Hat Enterprise Linux 6 dovecot, dovecot-mysql, dovecot-pgsql, dovecot-pigeonhole Red Hat Enterprise Linux 7 dovecot, dovecot-mysql, dovecot-pgsql, dovecot-pigeonhole
    affected: no fix available
  • Red Hat Enterprise Linux 5 dovecot Red Hat Enterprise Linux 8 dovecot, dovecot-mysql, dovecot-pgsql, dovecot-pigeonhole
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

2.55% chance of exploitation in the next 30 days, higher than 85% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 5.9 CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Affected products

  • The Dovecot Project dovecot

Classification

Weakness
  • CWE-400 Uncontrolled Resource Consumption

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.