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."
Published 2022-12-25 06:15:09
Updated 2023-10-08 09:15:11
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowExecute codeDenial of service

Exploit prediction scoring system (EPSS) score for CVE-2022-42898

0.49%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 74 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-42898

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
8.8
HIGH CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
2.8
5.9
NIST
8.8
HIGH AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A
N/A
Oracle:CPUOct2023

CWE ids for CVE-2022-42898

  • 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 can introduce other weaknesses when the calculation is used for resource management or execution control.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2022-42898

Products affected by CVE-2022-42898

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