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AUSCERT External Security Bulletin Redistribution
ESB-2021.1136
USN-4899-1: SpamAssassin vulnerability
6 April 2021
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AusCERT Security Bulletin Summary
---------------------------------
Product: SpamAssassin
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-1946
Reference: ESB-2021.1069
ESB-2021.1051
Original Bulletin:
https://ubuntu.com/security/notices/USN-4899-1
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USN-4899-1: SpamAssassin vulnerability
01 April 2021
SpamAssassin could be made to run programs if it opened a specially crafted
file.
Releases
o Ubuntu 20.04 LTS
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Packages
o spamassassin - Perl-based spam filter using text analysis
Details
Damian Lukowski discovered that SpamAssassin incorrectly handled certain CF
files. If a user or automated system were tricked into using a specially-
crafted CF file, a remote attacker could possibly run arbitrary code.
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 20.04
o spamassassin - 3.4.4-1ubuntu1.1
Ubuntu 18.04
o spamassassin - 3.4.2-0ubuntu0.18.04.5
Ubuntu 16.04
o spamassassin - 3.4.2-0ubuntu0.16.04.5
In general, a standard system update will make all the necessary changes.
References
o CVE-2020-1946
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