USN-3547-1: Libtasn1 vulnerabilities

Releases

• Ubuntu 17.10
• Ubuntu 16.04 ESM
• Ubuntu 14.04 ESM

Packages

• libtasn1-6 - Library to manage ASN.1 structures

Details

It was discovered that Libtasn1 incorrectly handled certain files.
If a user were tricked into opening a crafted file, an attacker could possibly
use this to cause a denial of service. This issue only affected Ubuntu 14.04
LTS and Ubuntu 16.04 LTS. (CVE-2017-10790)

It was discovered that Libtasn1 incorrectly handled certain inputs.
An attacker could possibly use this to cause Libtasn1 to hang, resulting
in a denial of service. This issue only affected Ubuntu 16.04 LTS and
Ubuntu 17.10. (CVE-2018-6003)

Update instructions

The problem can be corrected by updating your system to the following package versions:

Ubuntu 17.10

• libtasn1-6 - 4.12-2.1ubuntu0.1

Ubuntu 16.04

• libtasn1-6 - 4.7-3ubuntu0.16.04.3

Ubuntu 14.04

• libtasn1-6 - 3.4-3ubuntu0.6

In general, a standard system update will make all the necessary changes.

References

• CVE-2017-10790
• CVE-2018-6003