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Ubuntu: 4243-1 Critical: Libbsd Code Execution and Info Disclosure

ubuntu
Calendar Grey January 20, 2020
Dist Ubuntu Esm H88
Combatting libbsd security flaws within the Ubuntu ecosystem; critical patches issued for users.
Several security issues were fixed in libbsd.

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)

Topics%20covered

Topics Covered

security advisory code execution Ubuntu information disclosure libbsd

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://ubuntu.com/security/notices/USN-4243-1

CVE-2016-2090, CVE-2019-20367

Severity
critical
Lowest
Low
Medium
High
Critical

January 20, 2020

Topics%20covered

Topics Covered

security advisory code execution Ubuntu information disclosure libbsd

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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