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AUSCERT External Security Bulletin Redistribution
ESB-2020.2817
USN-4459-1: Salt vulnerabilities
17 August 2020
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AusCERT Security Bulletin Summary
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Product: Salt
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Execute Arbitrary Code/Commands -- Remote/Unauthenticated
Denial of Service -- Remote/Unauthenticated
Access Confidential Data -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-11652 CVE-2020-11651 CVE-2019-17361
CVE-2018-15751 CVE-2018-15750
Reference: ESB-2020.2572
ESB-2020.2508
ESB-2020.2494
ESB-2020.1894
Original Bulletin:
https://usn.ubuntu.com/4459-1/
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USN-4459-1: Salt vulnerabilities
13 August 2020
Several security issues were fixed in Salt.
Releases
o Ubuntu 18.04 LTS
o Ubuntu 16.04 LTS
Packages
o salt - Infrastructure management built on a dynamic communication bus
Details
It was discovered that Salt allows remote attackers to determine which files
exist on the server. An attacker could use that to extract sensitive
information. (CVE-2018-15750)
It was discovered that Salt has a vulnerability that allows an user to bypass
authentication. An attacker could use that to extract sensitive information,
execute abritrary code or crash the server. (CVE-2018-15751)
It was discovered that Salt is vulnerable to command injection. This allows
an unauthenticated attacker with network access to the API endpoint to
execute arbitrary code on the salt-api host. (CVE-2019-17361)
It was discovered that Salt incorrectly validated method calls and
sanitized paths. A remote attacker could possibly use this issue to access
some methods without authentication. (CVE-2020-11651, CVE-2020-11652)
Update instructions
The problem can be corrected by updating your system to the following package
versions:
Ubuntu 18.04
o salt-api - 2017.7.4+dfsg1-1ubuntu18.04.2
o salt-common - 2017.7.4+dfsg1-1ubuntu18.04.2
o salt-master - 2017.7.4+dfsg1-1ubuntu18.04.2
o salt-minion - 2017.7.4+dfsg1-1ubuntu18.04.2
Ubuntu 16.04
o salt-api - 2015.8.8+ds-1ubuntu0.1
o salt-common - 2015.8.8+ds-1ubuntu0.1
o salt-master - 2015.8.8+ds-1ubuntu0.1
o salt-minion - 2015.8.8+ds-1ubuntu0.1
After a standard system update you need to restart salt to make all the
necessary changes.
References
o CVE-2018-15750
o CVE-2018-15751
o CVE-2019-17361
o CVE-2020-11651
o CVE-2020-11652
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