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Ubuntu Security Notice USN-4243-1
January 20, 2020
libbsd vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:
– Ubuntu 19.04
– Ubuntu 18.04 LTS
– Ubuntu 16.04 LTS
– Ubuntu 14.04 ESM
– Ubuntu 12.04 ESM
Summary:
Several security issues were fixed in libbsd.
Software Description:
– libbsd: utility functions from BSD systems – development files
Details:
It was discovered that libbsd incorrectly handled certain inputs.
An attacker could possibly use this issue to execute arbitrary code.
This issue only affected Ubuntu 14.04 ESM. (CVE-2016-2090)
It was discovered that libbsd incorrectly handled certain strings.
An attacker could possibly use this issue to access sensitive information.
(CVE-2019-20367)
Update instructions:
The problem can be corrected by updating your system to the following
package versions:
Ubuntu 19.04:
libbsd0 0.9.1-2ubuntu0.1
Ubuntu 18.04 LTS:
libbsd0 0.8.7-1ubuntu0.1
Ubuntu 16.04 LTS:
libbsd0 0.8.2-1ubuntu0.1
Ubuntu 14.04 ESM:
libbsd0 0.6.0-2ubuntu1+esm1
Ubuntu 12.04 ESM:
libbsd0 0.3.0-2ubuntu0.1
In general, a standard system update will make all the necessary changes.
References:
https://usn.ubuntu.com/4243-1
CVE-2016-2090, CVE-2019-20367
Package Information:
https://launchpad.net/ubuntu/+source/libbsd/0.9.1-2ubuntu0.1
https://launchpad.net/ubuntu/+source/libbsd/0.8.7-1ubuntu0.1
https://launchpad.net/ubuntu/+source/libbsd/0.8.2-1ubuntu0.1
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