Privilege escalation in Cyrus Imap
CVE-2019-19783
An issue was discovered in Cyrus IMAP before 2.5.15, 3.0.x before 3.0.13, and 3.1.x through 3.1.8. If sieve script uploading is allowed (3.x) or certain non-default sieve options are enabled (2.x), a user with a mail account on the service can use a sieve script containing a fileinto directive to create any mailbox with administrator privileges, because of folder mishandling in autosieve_createfolder() in imap/lmtp_sieve.c.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.017 (75.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 76th percentile — 75.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000
Affected products
- Cyrus Imap
- Canonical Ubuntu Linux — versions 18.04
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 30, 31
Weakness classification (CWE)
References
- www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.15.html (Patch, Release Notes, Vendor Advisory)
- www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.13.html (Patch, Release Notes, Vendor Advisory)
- seclists.org/bugtraq/2019/Dec/38 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2019/dsa-4590 (vendor-advisory, Third Party 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)
- security.gentoo.org/glsa/202006-23 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4566-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-19783?
- CVE-2019-19783 is a medium-severity vulnerability in Cyrus Imap, classified under Improper Privilege Management. CVSS score: 6.5/10. Published 2019-12-16.
- How severe is CVE-2019-19783?
- Medium severity. CVSS v3 base score is 6.5 out of 10.