NULL Pointer Dereference

Affecting krb5 package, versions <1.12.1+dfsg-5

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NVD Description

Note: Versions mentioned in the description apply to the upstream krb5 package. See Remediation section below for Debian:9 relevant versions.

The acc_ctx_cont function in the SPNEGO acceptor in lib/gssapi/spnego/spnego_mech.c in MIT Kerberos 5 (aka krb5) 1.5.x through 1.12.x before 1.12.2 allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) via an empty continuation token at a certain point during a SPNEGO negotiation.

Remediation

Upgrade Debian:9 krb5 to version 1.12.1+dfsg-5 or higher.

References

CVSS Score

7.5
high severity
  • Attack Vector
    Network
  • Attack Complexity
    Low
  • Privileges Required
    None
  • User Interaction
    None
  • Scope
    Unchanged
  • Confidentiality
    None
  • Integrity
    None
  • Availability
    High
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVE
CVE-2014-4344
CWE
CWE-476
Snyk ID
SNYK-DEBIAN9-KRB5-395728
Disclosed
14 Aug, 2014
Published
14 Aug, 2014