CVE-2022-42898

Advisory lineage Upstream: 0 Downstream: 39
Modified
Published: 25 Dec 2022, 00:00
Last modified:14 Apr 2025, 18:33

Vulnerability Summary

Overall Risk (default)
medium
47/100
CVSS Score
8.8 HIGH
v3.1 (cve.org)
EPSS Score
10.83% MEDIUM
11% probability +1.94%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

25 Dec 2022, 00:00
Published
Vulnerability first disclosed
14 Apr 2025, 18:33
Last Modified
Vulnerability information updated

Description

PAC parsing in MIT Kerberos 5 (aka krb5) before 1.19.4 and 1.20.x before 1.20.1 has integer overflows that may lead to remote code execution (in KDC, kadmind, or a GSS or Kerberos application server) on 32-bit platforms (which have a resultant heap-based buffer overflow), and cause a denial of service on other platforms. This occurs in krb5_pac_parse in lib/krb5/krb/pac.c. Heimdal before 7.7.1 has "a similar bug."

CVSS Metrics

  • v3.1•HIGH•Score: 8.8CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Trends

Current EPSS score: 10.83%• Percentile: 94%

Techniques & Countermeasures

  • CWE-190•Integer Overflow or Wraparound

    The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

Affected Systems

  • heimdal_project•heimdal

    < 7.7.1

  • mit•kerberos_5

    ≥ 1.8, < 1.19.4 | 1.20 | 1.20:beta1

  • samba•samba

    < 4.15.12 | ≥ 4.16.0, < 4.16.7 | ≥ 4.17.0, < 4.17.3

References (11)