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NULL Pointer Dereference Affecting krb5 package, versions <1.8.1+dfsg-3

Severity

 Recommended
low

Based on Debian security rating

    Threat Intelligence

    EPSS
    0.7% (81st percentile)

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  • Snyk ID SNYK-DEBIAN10-KRB5-396103
  • published 19 May 2010
  • disclosed 19 May 2010
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Introduced: 19 May 2010

CVE-2010-1321 Open this link in a new tab
CWE-476 Open this link in a new tab

How to fix?

Upgrade Debian:10 krb5 to version 1.8.1+dfsg-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream krb5 package and not the krb5 package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

The kg_accept_krb5 function in krb5/accept_sec_context.c in the GSS-API library in MIT Kerberos 5 (aka krb5) through 1.7.1 and 1.8 before 1.8.2, as used in kadmind and other applications, does not properly check for invalid GSS-API tokens, which allows remote authenticated users to cause a denial of service (NULL pointer dereference and daemon crash) via an AP-REQ message in which the authenticator's checksum field is missing.

References

CVSS Scores

version 3.1
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NVD

6.5 medium
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    Low
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    None
  • Integrity (I)
    None
  • Availability (A)
    High
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Red Hat

4.3 medium