Buffer overflow in Cyrus Imap
CVE-2019-11356
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.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.076 (94.5th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 95th percentile — 94.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.076 · newest: 0.076 · change: 0.000
Affected products
- Cyrus Imap
- Canonical Ubuntu Linux — versions 18.04
- Debian Linux — versions 9.0
- Fedoraproject Fedora — versions 29, 30
- Red Hat Enterprise Linux — versions 8.0
- Red Hat Enterprise Linux Eus — versions 8.1, 8.2, 8.4
- Red Hat Enterprise Linux Server Aus — versions 8.2, 8.4
- Red Hat Enterprise Linux Server Tus — versions 8.2, 8.4
Weakness classification (CWE)
References
- www.cyrusimap.org/imap/download/release-notes/2.5/index.html (Release Notes, Vendor Advisory)
- www.cyrusimap.org/imap/download/release-notes/3.0/index.html (Release Notes, Vendor Advisory)
- www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.13.html (Release Notes, Vendor Advisory)
- www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.10.html (Release Notes, Vendor Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2019/dsa-4458 (vendor-advisory, Third Party Advisory)
- seclists.org/bugtraq/2019/Jun/9 (mailing-list, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:1771 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4566-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-11356?
- CVE-2019-11356 is a critical-severity vulnerability in Cyrus Imap, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2019-06-03.
- How severe is CVE-2019-11356?
- Critical severity. CVSS v3 base score is 9.8 out of 10.