CVE-2019-19783

MEDIUM EPSS 73.6%
Published Dec 16, 20196y ago · Modified Jun 17, 20262w ago
6.5 CVSS 3.1
Medium
Find Similar
Published Dec 16, 2019 6y ago
Last Modified Jun 17, 2026 2w ago

Description

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.

CVSS Details

Base Score
6.5
Exploitability
2.8
Impact
3.6
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity High
Availability None

Threat Intelligence

EPSS Exploit Probability
73.6% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-269 Improper Privilege Management Authorization

Affected Products 8

VendorProductVersionRange
cyrusimap*≥2.5.0  –  <2.5.15
cyrusimap*≥3.0.0  –  <3.0.13
cyrusimap*≥3.1.0  –  <3.1.8
debiandebian_linux9.0any
debiandebian_linux10.0any
fedoraprojectfedora30any
fedoraprojectfedora31any
canonicalubuntu_linux18.04any

References 8

  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DIV4HQ6LG5GPRO4B5Z2NHCZUPBUVVVF/
  • lists.fedoraproject.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IGOO5UGEBBDPN7B2YXLK7I7L3Y35EBA/
  • seclists.org https://seclists.org/bugtraq/2019/Dec/38
    Mailing ListThird Party Advisory
  • security.gentoo.org https://security.gentoo.org/glsa/202006-23
    Third Party Advisory
  • usn.ubuntu.com https://usn.ubuntu.com/4566-1/
    Third Party Advisory
  • cyrusimap.org https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.15.html
    PatchRelease NotesVendor Advisory
  • cyrusimap.org https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.13.html
    PatchRelease NotesVendor Advisory
  • debian.org https://www.debian.org/security/2019/dsa-4590
    Third Party Advisory

Remediation

  • cyrusimap.org https://www.cyrusimap.org/imap/download/release-notes/2.5/x/2.5.15.html
    PatchRelease NotesVendor Advisory
  • cyrusimap.org https://www.cyrusimap.org/imap/download/release-notes/3.0/x/3.0.13.html
    PatchRelease NotesVendor Advisory