USN-3318-1: GnuTLS vulnerabilities
Ubuntu Security Notice USN-3318-1
13th June, 2017
gnutls26, gnutls28 vulnerabilities
A security issue affects these releases of Ubuntu and its
derivatives:
- Ubuntu 17.04
- Ubuntu 16.10
- Ubuntu 16.04 LTS
- Ubuntu 14.04 LTS
Summary
Several security issues were fixed in GnuTLS.
Software description
- gnutls26
– GNU TLS library - gnutls28
– GNU TLS library
Details
Hubert Kario discovered that GnuTLS incorrectly handled decoding a status
response TLS extension. A remote attacker could possibly use this issue to
cause GnuTLS to crash, resulting in a denial of service. This issue only
applied to Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-7507)
It was discovered that GnuTLS incorrectly handled decoding certain OpenPGP
certificates. A remote attacker could use this issue to cause GnuTLS to
crash, resulting in a denial of service, or possibly execute arbitrary
code. (CVE-2017-7869)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 17.04:
-
libgnutls30
3.5.6-4ubuntu4.1
- Ubuntu 16.10:
-
libgnutls30
3.5.3-5ubuntu1.2
- Ubuntu 16.04 LTS:
-
libgnutls30
3.4.10-4ubuntu1.3
- Ubuntu 14.04 LTS:
-
libgnutls26
2.12.23-12ubuntu2.8
To update your system, please follow these instructions:
https://wiki.ubuntu.com/Security/Upgrades.
In general, a standard system update will make all the necessary changes.
References
Source: USN-3318-1: GnuTLS vulnerabilities
