critical
CVE-2019-11356
cyrus-imapd: buffer overflow in CalDAV request handling triggered by a long iCalendar property name
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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat5.6CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Red Hat (high), Oracle (high), Ubuntu (medium).
Description
The CalDAV feature in httpd in Cyrus IMAP 2.5.x through 2.5.12 and 3.0.x through 3.0.9 allows remote attackers to execute arbitrary code via a crafted HTTP PUT operation for an event with a long iCalendar property name.
Affected packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | cyrus-imapd | 3.0.8-6 |
| debian 12 | cyrus-imapd | 3.0.8-6 |
| debian 13 | cyrus-imapd | 3.0.8-6 |
| debian 14 | cyrus-imapd | 3.0.8-6 |
| debian 9 | cyrus-imapd | 2.5.10-3+deb9u1 |
| echo | cyrus-imapd | 3.0.8-6 |
| Oracle Linux 8 | cyrus-imapd, cyrus-imapd-utils, cyrus-imapd-vzic | 3.0.7-15.el8_0.1 |
| ubuntu 18.04 | cyrus-imapd | 2.5.10-3ubuntu1.1 |
| ubuntu 18.04-ESM | cyrus-imapd | 2.5.10-3ubuntu1.1 |
| ubuntu 19.10 | cyrus-imapd | 3.0.8-6 |
| ubuntu 20.04 | cyrus-imapd | 3.0.8-6 |
| ubuntu 20.04-ESM | cyrus-imapd | 3.0.8-6 |
Show all 15 entries from 13 sources
| Source | Package | Fixed in |
|---|---|---|
| debian 11 | cyrus-imapd | 3.0.8-6 |
| debian 12 | cyrus-imapd | 3.0.8-6 |
| debian 13 | cyrus-imapd | 3.0.8-6 |
| debian 14 | cyrus-imapd | 3.0.8-6 |
| debian 9 | cyrus-imapd | 2.5.10-3+deb9u1 |
| echo | cyrus-imapd | 3.0.8-6 |
| Oracle Linux 8 | cyrus-imapd | 3.0.7-15.el8_0.1 |
| Oracle Linux 8 | cyrus-imapd-utils | 3.0.7-15.el8_0.1 |
| Oracle Linux 8 | cyrus-imapd-vzic | 3.0.7-15.el8_0.1 |
| ubuntu 18.04 | cyrus-imapd | 2.5.10-3ubuntu1.1 |
| ubuntu 18.04-ESM | cyrus-imapd | 2.5.10-3ubuntu1.1 |
| ubuntu 19.10 | cyrus-imapd | 3.0.8-6 |
| ubuntu 20.04 | cyrus-imapd | 3.0.8-6 |
| ubuntu 20.04-ESM | cyrus-imapd | 3.0.8-6 |
| ubuntu 20.10 | cyrus-imapd | 3.0.8-6 |
References
- https://access.redhat.com/errata/RHSA-2019:1771
- https://access.redhat.com/security/cve/CVE-2019-11356
- https://bugzilla.redhat.com/show_bug.cgi?id=1717828
- https://github.com/cyrusimap/cyrus-imapd/commit/a5779db8163b99463e25e7c476f9cbba438b65f3
- https://linux.oracle.com/cve/CVE-2019-11356.html
- https://linux.oracle.com/errata/ELSA-2019-1771.html
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/IGO43JS7IFDNITHXOOHOP6JHRKRDIYY6/
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/PICSZDC3UGEUZ27VXGGM6OFI67D3KKLZ/
All 18 references
- https://nvd.nist.gov/vuln/detail/CVE-2019-11356
- https://seclists.org/bugtraq/2019/Jun/9
- https://ubuntu.com/security/notices/USN-4566-1
- https://usn.ubuntu.com/4566-1/
- https://www.cve.org/CVERecord?id=CVE-2019-11356
- https://www.cyrusimap.org/imap/download/release-notes/2.5/index.html
- https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html
- https://www.cyrusimap.org/imap/download/release-notes/3.0/index.html
- https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html
- https://www.debian.org/security/2019/dsa-4458