[USN-4243-1] libbsd vulnerabilities

Leonidas S. Barbosa leo.barbosa at canonical.com
Mon Jan 20 16:33:25 UTC 2020

Ubuntu Security Notice USN-4243-1
January 20, 2020

libbsd vulnerabilities

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


Several security issues were fixed in libbsd.

Software Description:
- libbsd: utility functions from BSD systems - development files


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.

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.

  CVE-2016-2090, CVE-2019-20367

Package Information:
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <https://lists.ubuntu.com/archives/ubuntu-security-announce/attachments/20200120/8e80e3f7/attachment.sig>

More information about the ubuntu-security-announce mailing list