CVE-2002-2443 Denial of service in n/a

What is CVE-2002-2443?

CVE-2002-2443 is a medium-severity denial of service vulnerability in Canonical Ubuntu Linux, published on 29 May 2013. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

schpw.c in the kpasswd service in kadmind in MIT Kerberos 5 (aka krb5) before 1.11.3 does not properly validate UDP packets before sending responses, which allows remote attackers to cause a denial of service (CPU and bandwidth consumption) via a forged packet that triggers a communication loop, as demonstrated by krb_pingpong.nasl, a related issue to CVE-1999-0103.

Weakness: CWE-20

Which versions are affected by CVE-2002-2443?

It affects 10 products.

Products include Canonical Ubuntu Linux, Debian Debian Linux, Fedoraproject Fedora, Mit Kerberos 5, Opensuse Opensuse, Redhat Enterprise Linux Desktop and 4 more.

How do I fix CVE-2002-2443?

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-2002-2443 being exploited?

There is no known exploitation of CVE-2002-2443 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-2002-2443, DSA-2701-1, GHSA-cqf2-6q6w-6cqw, MGASA-2013-0161, RHSA-2013:0942.