Improper Input Validation Affecting krb5-server-ldap package, versions <0:1.10.3-10.26.amzn1


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
78.74% (99th percentile)

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  • Snyk IDSNYK-AMZN201803-KRB5SERVERLDAP-1669371
  • published27 Sept 2021
  • disclosed29 May 2013

Introduced: 29 May 2013

CVE-2002-2443  (opens in a new tab)
CWE-20  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 krb5-server-ldap to version 0:1.10.3-10.26.amzn1 or higher.
This issue was patched in ALAS-2013-208.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5-server-ldap package and not the krb5-server-ldap package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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.

CVSS Scores

version 3.1