CVE-2015-2696 Denial of service in n/a

What is CVE-2015-2696?

CVE-2015-2696 is a high-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 9 Nov 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

lib/gssapi/krb5/iakerb.c in MIT Kerberos 5 (aka krb5) before 1.14 relies on an inappropriate context handle, which allows remote attackers to cause a denial of service (incorrect pointer read and process crash) via a crafted IAKERB packet that is mishandled during a gss_inquire_context call.

Weakness: CWE-18

Which versions are affected by CVE-2015-2696?

It affects 8 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Mit Kerberos 5, Opensuse Leap, Opensuse Opensuse, Suse Linux Enterprise Desktop and 2 more.

How do I fix CVE-2015-2696?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2015-2696 being exploited?

There is no known exploitation of CVE-2015-2696 in the wild and no public exploit code.

Other vulnerabilities in Canonical Ubuntu Linux

• CVE-2020-11651 SaltStack Salt Authentication Bypass Exploited Critical 9.8
• CVE-2020-7247 OpenSMTPD Remote Code Execution Exploited Critical 9.8
• CVE-2019-16928 Exim Out-of-bounds Write Exploited Critical 9.8
• CVE-2018-6789 Exim Buffer Overflow Exploited Critical 9.8
• CVE-2015-2590 Oracle Java SE and Java SE Embedded Remote Code Execution Exploited Critical 9.8

All Canonical Ubuntu Linux vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2015-2696, GHSA-hr7f-g375-m62r, UBUNTU-CVE-2015-2696.