PT-2018-3409 · Dovecot+3 · Dovecot+3

Published 2018-01-20 · Updated 2025-01-30 · CVE-2017-15132

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: dovecot versions 2.0 through 2.2.33 dovecot version 2.3.0

Description: A flaw in the SASL authentication process can cause a memory leak in dovecot's auth client, which is used by login processes. This issue can have significant impact in high-performance configurations where the same login processes are reused, potentially leading to process crashes due to memory exhaustion. The vulnerability can be exploited by a remote attacker to cause a denial of service.

Recommendations: For dovecot versions 2.0 through 2.2.33, consider updating to a version that fixes the memory leak issue. For dovecot version 2.3.0, consider updating to a version that fixes the memory leak issue. As a temporary workaround, consider restricting the reuse of login processes to minimize the risk of memory exhaustion.

Fix

Resource Exhaustion

Missing Release of Resource after Effective Lifetime

Weakness Enumeration

CWE-400

CWE-772

Related Identifiers

ALT-PU-2018-1065

BDU:2020-00781

CVE-2017-15132

DLA-1333-1

DSA-4130-1

MGASA-2018-0114

OPENSUSE-SU-2024:10726-1

OPENSUSE-SU-2025:14715-1

SUSE-SU-2018:0466-1

SUSE-SU-2018_0466-1

USN-3556-1

USN-3556-2

Affected Products

Alt Linux

Suse

Ubuntu

Dovecot

References · 58

• https://github.com/dovecot/core/commit/1a29ed2f96da1be22fa5a4d96c7583aa81b8b060.patch · Patch
• https://osv.dev/vulnerability/openSUSE-SU-2025:14715-1 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2017-15132 · Security Note
• https://ubuntu.com/security/notices/USN-3556-1 · Vendor Advisory
• https://osv.dev/vulnerability/SUSE-SU-2018:0466-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-15132 · Security Note
• https://debian.org/security/2018/dsa-4130 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-4130-1 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2018-0114.html · Security Note
• https://osv.dev/vulnerability/openSUSE-SU-2024:10726-1 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2017-15132 · Vendor Advisory
• https://osv.dev/vulnerability/ALPINE-CVE-2017-15132 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-00781 · Security Note
• https://usn.ubuntu.com/3556-2 · Vendor Advisory
• https://dovecot.org/list/dovecot-news/2018-February/000370.html · Vendor Advisory