Executive Summary

Title cyrus-imapd security update
Name DSA-4590 First vendor Publication 2019-12-19
Vendor Debian Last vendor Modification 2019-12-19
Severity (Vendor) N/A Revision 1

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Overall CVSS Score 6.5
Base Score 6.5 Environmental Score 6.5
impact SubScore 3.6 Temporal Score 6.5
Exploitabality Sub Score 2.8
Attack Vector Network Attack Complexity Low
Privileges Required Low User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:M/Au:S/C:N/I:P/A:N)
Cvss Base Score 3.5 Attack Range Network
Cvss Impact Score 2.9 Attack Complexity Medium
Cvss Expoit Score 6.8 Authentication Requires single instance
Calculate full CVSS 2.0 Vectors scores


It was discovered that the lmtpd component of the Cyrus IMAP server created mailboxes with administrator privileges if the "fileinto" was used, bypassing ACL checks.

For the oldstable distribution (stretch), this problem has been fixed in version 2.5.10-3+deb9u2.

For the stable distribution (buster), this problem has been fixed in version 3.0.8-6+deb10u3.

We recommend that you upgrade your cyrus-imapd packages.

For the detailed security status of cyrus-imapd please refer to its security tracker page at: https://security-tracker.debian.org/tracker/cyrus-imapd

Original Source

Url : http://www.debian.org/security/2019/dsa-4590

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-269 Improper Privilege Management

CPE : Common Platform Enumeration

Application 42
Os 2

Alert History

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Date Informations
2020-05-23 13:03:43
  • Multiple Updates
2019-12-20 00:18:40
  • First insertion