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Alerts This Week
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Ubuntu 15.04: 2727-2 Severe: GnuTLS Security Flaw Exploitation

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Calendar Grey September 1, 2015
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Ubuntu 16.04 has been identified with OpenSSL issues that can lead to system instability or arbitrary code execution through malicious certificates.
GnuTLS could be made to crash or run programs if it processed a specially crafted certificate.

Summary

GnuTLS could be made to crash or run programs if it processed a specially

crafted certificate.

Software Description:

- gnutls28: GNU TLS library

Details:

It was discovered that GnuTLS incorrectly handled parsing CRL distribution

points. A remote attacker could possibly use this issue to cause a denial

of service, or execute arbitrary code. (CVE-2015-3308)

Kurt Roeckx discovered that GnuTLS incorrectly handled a long

DistinguishedName (DN) entry in a certificate. A remote attacker could

possibly use this issue to cause a denial of service, or execute arbitrary

code. (CVE-2015-6251)

Topics%20covered

Topics Covered

security advisory denial of service critical code execution Ubuntu GnuTLS

Update Instructions

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

Ubuntu 15.04:
  libgnutls-deb0-28               3.3.8-3ubuntu3.1

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

References

https://ubuntu.com/security/notices/USN-2727-1

CVE-2015-3308, CVE-2015-6251

Severity
critical
Lowest
Low
Medium
High
Critical

September 01, 2015

Topics%20covered

Topics Covered

security advisory denial of service critical code execution Ubuntu GnuTLS

Package Information

https://launchpad.net/ubuntu/+source/gnutls28/3.3.8-3ubuntu3.1

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