CVE-2019-7524

Severity: high (CVSS 7.8 v3.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2019-03-28 · updated 2026-06-17
Weakness: CWE-119

Description

In Dovecot before 2.2.36.3 and 2.3.x before 2.3.5.1, a local attacker can cause a buffer overflow in the indexer-worker process, which can be used to elevate to root. This occurs because of missing checks in the fts and pop3-uidl components.

Affected products

Canonical Ubuntu Linux: 14.04, 16.04, 18.04, 18.10
Debian Linux: 8.0, 9.0
dovecot: before 2.2.36.3; from 2.3.0 before 2.3.5.1 — fixed in 2.2.36.3, 2.3.5.1
openSUSE Leap: 15.0, 42.3

How to fix

Upgrade to a fixed version: dovecot 2.2.36.3, 2.3.5.1. Check the vendor advisory for mitigations.

References

http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00060.html
http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html
http://www.openwall.com/lists/oss-security/2019/03/28/1
http://www.securityfocus.com/bid/107672
https://dovecot.org/list/dovecot-news/2019-March/000403.html
https://dovecot.org/security.html
https://lists.debian.org/debian-lts-announce/2019/03/msg00038.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
https://seclists.org/bugtraq/2019/Mar/59
https://security.gentoo.org/glsa/201904-19
https://usn.ubuntu.com/3928-1/

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