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AUSCERT External Security Bulletin Redistribution
ESB-2019.1094
USN-3928-1: Dovecot vulnerability
2 April 2019
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AusCERT Security Bulletin Summary
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Product: Dovecot
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Existing Account
Increased Privileges -- Existing Account
Denial of Service -- Existing Account
Resolution: Patch/Upgrade
CVE Names: CVE-2019-7524
Reference: ESB-2019.1071
ESB-2019.1045
ESB-2019.1038
Original Bulletin:
https://usn.ubuntu.com/3928-1/
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USN-3928-1: Dovecot vulnerability
1 April 2019
dovecot vulnerability
A security issue affects these releases of Ubuntu and its derivatives:
o Ubuntu 18.10
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
o Ubuntu 14.04 LTS
Summary
Dovecot could be made to crash or run programs as an administrator if it opened
a specially crafted file.
Software Description
o dovecot - IMAP and POP3 email server
Details
It was discovered that Dovecot incorrectly handled reading certain headers from
the index. A local attacker could possibly use this issue to escalate
privileges.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.10
dovecot-core - 1:2.3.2.1-1ubuntu3.2
Ubuntu 18.04 LTS
dovecot-core - 1:2.2.33.2-1ubuntu4.3
Ubuntu 16.04 LTS
dovecot-core - 1:2.2.22-1ubuntu2.10
Ubuntu 14.04 LTS
dovecot-core - 1:2.2.9-1ubuntu2.6
To update your system, please follow these instructions: https://
wiki.ubuntu.com/Security/Upgrades .
In general, a standard system update will make all the necessary changes.
References
o CVE-2019-7524
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