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Vulnerabilities / CVE-2019-11500

critical

CVE-2019-11500

dovecot: improper NULL byte handling in IMAP and ManageSieve protocol parsers leads to out of bounds writes

Published Modified CWE 787
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat8.1CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), Amazon (high), Oracle (high), Ubuntu (high).

Description

In Dovecot before 2.2.36.4 and 2.3.x before 2.3.7.2 (and Pigeonhole before 0.5.7.2), protocol processing can fail for quoted strings. This occurs because '\0' characters are mishandled, and can lead to out-of-bounds writes and remote code execution.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.10dovecot2.3.7.2-r0
alpine 3.11dovecot2.3.7.2-r0
alpine 3.12dovecot2.3.7.2-r0
alpine 3.13dovecot2.3.7.2-r0
alpine 3.14dovecot2.3.7.2-r0
alpine 3.15dovecot2.3.7.2-r0
alpine 3.16dovecot2.3.7.2-r0
alpine 3.17dovecot2.3.7.2-r0
alpine 3.18dovecot2.3.7.2-r0
alpine 3.19dovecot2.3.7.2-r0
alpine 3.20dovecot2.3.7.2-r0
alpine 3.21dovecot2.3.7.2-r0
Show all 53 entries from 37 sources
SourcePackageFixed in
alpine 3.10dovecot2.3.7.2-r0
alpine 3.11dovecot2.3.7.2-r0
alpine 3.12dovecot2.3.7.2-r0
alpine 3.13dovecot2.3.7.2-r0
alpine 3.14dovecot2.3.7.2-r0
alpine 3.15dovecot2.3.7.2-r0
alpine 3.16dovecot2.3.7.2-r0
alpine 3.17dovecot2.3.7.2-r0
alpine 3.18dovecot2.3.7.2-r0
alpine 3.19dovecot2.3.7.2-r0
alpine 3.20dovecot2.3.7.2-r0
alpine 3.21dovecot2.3.7.2-r0
alpine 3.22dovecot2.3.7.2-r0
alpine 3.23dovecot2.3.7.2-r0
alpine 3.24dovecot2.3.7.2-r0
alpine 3.7dovecot2.2.36.4-r0
alpine 3.8dovecot2.3.7.2-r0
alpine 3.9dovecot2.3.7.2-r0
alpine edgedovecot2.3.7.2-r0
amazon linux 2dovecot1:2.2.36-3.amzn2.1
amazon linux 2dovecot-debuginfo1:2.2.36-3.amzn2.1
amazon linux 2dovecot-devel1:2.2.36-3.amzn2.1
amazon linux 2dovecot-mysql1:2.2.36-3.amzn2.1
amazon linux 2dovecot-pgsql1:2.2.36-3.amzn2.1
amazon linux 2dovecot-pigeonhole1:2.2.36-3.amzn2.1
debian 10dovecot1:2.3.4.1-5+deb10u1
debian 11dovecot1:2.3.7.2-1
debian 12dovecot1:2.3.7.2-1
debian 13dovecot1:2.3.7.2-1
debian 14dovecot1:2.3.7.2-1
debian 8dovecot1:2.2.13-12~deb8u7
debian 9dovecot1:2.2.27-3+deb9u5
echodovecot1:2.3.7.2-1
Oracle Linux 6dovecot1:2.0.9-22.el6_10.1
Oracle Linux 6dovecot-devel1:2.0.9-22.el6_10.1
Oracle Linux 6dovecot-mysql1:2.0.9-22.el6_10.1
Oracle Linux 6dovecot-pgsql1:2.0.9-22.el6_10.1
Oracle Linux 6dovecot-pigeonhole1:2.0.9-22.el6_10.1
Oracle Linux 7dovecot1:2.2.36-3.el7_7.1
Oracle Linux 7dovecot-devel1:2.2.36-3.el7_7.1
Oracle Linux 7dovecot-mysql1:2.2.36-3.el7_7.1
Oracle Linux 7dovecot-pgsql1:2.2.36-3.el7_7.1
Oracle Linux 7dovecot-pigeonhole1:2.2.36-3.el7_7.1
Oracle Linux 8dovecot1:2.2.36-5.el8_0.1
Oracle Linux 8dovecot-devel1:2.2.36-5.el8_0.1
Oracle Linux 8dovecot-mysql1:2.2.36-5.el8_0.1
Oracle Linux 8dovecot-pgsql1:2.2.36-5.el8_0.1
ubuntu 14.04-ESMdovecot1:2.2.9-1ubuntu2.6+esm1
ubuntu 16.04dovecot1:2.2.22-1ubuntu2.11
ubuntu 16.04-ESMdovecot1:2.2.22-1ubuntu2.11
ubuntu 18.04dovecot1:2.2.33.2-1ubuntu4.4
ubuntu 18.04-ESMdovecot1:2.2.33.2-1ubuntu4.4
ubuntu 19.04dovecot1:2.3.4.1-1ubuntu2.3

References

All 23 references

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.