medium
5
CWE
20
Advisory Published
CVE Published
Updated

CVE-2002-2443: Input Validation

First published: Mon May 13 2013(Updated: )

A flaw in certain programs that handle UDP traffic was discovered and assigned the name <a href="https://access.redhat.com/security/cve/CVE-1999-0103">CVE-1999-0103</a> (that CVE specifically mentions echo and chargen as vulnerable). In 2002, a Nessus plugin was included [1] that reference this CVE name, but was for the kpasswd service. Until recently, this issue had not been reported upstream. This issue has since been reported upstream [2] and is now fixed [3]. If a malicious remote user were to spoof their IP address to that of another server running kadmind with the password change port (kpasswd, port 464), or to the target server's IP address itself), kpasswd will pass UDP packets to the spoofed address and reply each time. This can be used to consume bandwidth and CPU on the affected servers running kadmind. This should be fixed in the for krb5-1.11.3 release. [1] <a href="http://marc.info/?l=nessus&amp;m=102418951803893&amp;w=2">http://marc.info/?l=nessus&amp;m=102418951803893&amp;w=2</a> [2] <a href="http://krbdev.mit.edu/rt/Ticket/Display.html?id=7637">http://krbdev.mit.edu/rt/Ticket/Display.html?id=7637</a> [3] <a href="https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322c">https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322c</a>

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Kerberos<1.11.3
SUSE Linux=12.3
SUSE Linux=11.4
SUSE Linux=12.2
Fedora=17
Fedora=18
Fedora=19
Red Hat Enterprise Linux Server=5.0
Red Hat Enterprise Linux Workstation=5.0
Red Hat Enterprise Linux Server=6.4
Red Hat Enterprise Linux Desktop=6.0
Red Hat Enterprise Linux Server=6.0
Red Hat Enterprise Linux Workstation=6.0
Red Hat Enterprise Linux Desktop=5.0
Red Hat Enterprise Linux Server EUS=5.9
Red Hat Enterprise Linux Server EUS=6.4
Debian=8.0
Debian=7.0
Debian=6.0
Ubuntu=15.10
Ubuntu=15.04
Ubuntu=14.04
Ubuntu=12.04

Remedy

https://github.com/krb5/krb5/commit/cf1a0c411b2668c57c41e9c4efd15ba17b6b322c

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Read MoreStart Free Trial

Reference Links

Frequently Asked Questions

  • What is the severity of CVE-2002-2443?

    CVE-2002-2443 is considered a moderate severity vulnerability that affects various implementations of UDP traffic handling.

  • How do I fix CVE-2002-2443?

    To fix CVE-2002-2443, ensure that you update your vulnerable software packages to the latest versions that contain the security fixes.

  • Which software is affected by CVE-2002-2443?

    CVE-2002-2443 affects several software, including MIT Kerberos 5, various versions of openSUSE, Fedora, Red Hat Enterprise Linux, and Debian.

  • Is CVE-2002-2443 exploitable remotely?

    Yes, CVE-2002-2443 can be exploited remotely due to its impact on how UDP traffic is handled by affected software.

  • What can happen if CVE-2002-2443 is exploited?

    Exploitation of CVE-2002-2443 may lead to denial of service or potentially allow an attacker to perform arbitrary code execution.

Company

Resources

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203