synced 11 MIN AGO
01 Record

CVE-2003-0138

Version 4 of the Kerberos protocol (krb4), as used in Heimdal and other packages, allows an attacker to impersonate any principal in a realm via a chosen-plaintext attack.

UnratedPUBLISHEDCNA: mitre
CNA base scoreUnratedNo CNA CVSS vector

02 Description

Version 4 of the Kerberos protocol (krb4), as used in Heimdal and other packages, allows an attacker to impersonate any principal in a realm via a chosen-plaintext attack.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
4.28% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 90.7% of scored records. A rank, not a probability.
NVD base score
The NVD has published no score for this record
NVD CVSS vector
No NVD score to derive
NVD analysis status
Modified. NVD last modified this record on 2026-06-16.
Red Hat severity
Important. Red Hat's rating for its own products, not a CVSS rating.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2003-03-21 05:00Z23 YR AGO
Last updated
2024-08-08 01:43Z2 YR AGO
Reserved
2003-03-13
Assigning CNA
mitre
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
No CWE assigned
Data version
5.1
Document digest
6712a2e0b670ab60c9bd82b1fa68161c7bc3f49305091cfea989b5a9ef8a9284

05 Affected products

VendorProductVersionsPlatforms
mitkerberosNot specified—
redhatenterprise_linuxNot specified—
redhatlinuxNot specified—

06 References

07 Fixed in

Debian 12

  • heimdal
    Fixed in 0.5.2-1
  • krb5
    Fixed in 1.2.7-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 13

  • heimdal
    Fixed in 0.5.2-1
  • krb5
    Fixed in 1.2.7-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

Debian 14

  • heimdal
    Fixed in 0.5.2-1
  • krb5
    Fixed in 1.2.7-3

Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.

A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.