PT-2019-3525 · Dovecot+3 · Dovecot+3

Published 2019-04-30 · Updated 2025-01-30 · CVE-2019-11494

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 2.3.3 through 2.3.5.2

Description The issue is related to the implementation of the Internet Message Access Protocol (IMAP) in the Dovecot mail server, specifically a null pointer dereference. This can be exploited by a remote attacker to cause a denial of service. The submission-login service crashes when the client disconnects prematurely during the AUTH command.

Recommendations For Dovecot versions 2.3.3 through 2.3.5.2, consider disabling the submission-login service as a temporary workaround until a patch is available. Restrict access to the IMAP server to minimize the risk of exploitation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

RCE

NULL Pointer Dereference

Weakness Enumeration

CWE-20

CWE-476

Related Identifiers

ALT-PU-2019-2531

ALT-PU-2019-2533

BDU:2019-03702

CVE-2019-11494

OPENSUSE-SU-2019:2278-1

OPENSUSE-SU-2019:2281-1

OPENSUSE-SU-2019_2278-1

OPENSUSE-SU-2019_2281-1

OPENSUSE-SU-2024:10726-1

OPENSUSE-SU-2025:14715-1

SUSE-SU-2019:2514-1

SUSE-SU-2019_2514-1

USN-3961-1

Affected Products

Alt Linux

Dovecot

Suse

Ubuntu

References · 81

• https://osv.dev/vulnerability/SUSE-SU-2019:2514-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-02459 · Security Note
• https://errata.altlinux.org/ALT-PU-2019-2533 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3961-1 · Vendor Advisory
• https://errata.altlinux.org/ALT-PU-2019-2531 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2025:14715-1 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-11494 · Security Note
• https://bdu.fstec.ru/vul/2019-03704 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2019-11494 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11494 · Security Note
• https://security-tracker.debian.org/tracker/CVE-2019-11494 · Vendor Advisory
• https://ubuntu.com/security/CVE-2019-11494 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2019-11494 · Vendor Advisory
• https://osv.dev/vulnerability/openSUSE-SU-2024:10726-1 · Vendor Advisory
• https://bdu.fstec.ru/vul/2019-03214 · Security Note