CVE-2022-42898

HIGH
Published Dec 25, 20223y ago · Modified Jun 17, 20262w ago
8.8 CVSS 3.1
High
Find Similar
Published Dec 25, 2022 3y ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
8.8
Exploitability
2.8
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

No active exploitation signals — not in CISA KEV and no EPSS score yet.

Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 7

VendorProductVersionRange
mitkerberos_5*≥1.8  –  <1.19.4
mitkerberos_51.20any
mitkerberos_51.20any
heimdal_projectheimdal* <7.7.1
sambasamba* <4.15.12
sambasamba*≥4.16.0  –  <4.16.7
sambasamba*≥4.17.0  –  <4.17.3

References 11

  • bugzilla.samba.org https://bugzilla.samba.org/show_bug.cgi?id=15203
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
    Third Party Advisory
  • github.com https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
    PatchThird Party Advisory
  • security.gentoo.org https://security.gentoo.org/glsa/202309-06
  • security.gentoo.org https://security.gentoo.org/glsa/202310-06
  • security.netapp.com https://security.netapp.com/advisory/ntap-20230216-0008/
  • security.netapp.com https://security.netapp.com/advisory/ntap-20230223-0001/
  • web.mit.edu https://web.mit.edu/kerberos/advisories/
    Vendor Advisory
  • web.mit.edu https://web.mit.edu/kerberos/krb5-1.19/
    Release NotesVendor Advisory
  • web.mit.edu https://web.mit.edu/kerberos/krb5-1.20/README-1.20.1.txt
    Vendor Advisory
  • samba.org https://www.samba.org/samba/security/CVE-2022-42898.html
    Third Party Advisory

Remediation

  • bugzilla.samba.org https://bugzilla.samba.org/show_bug.cgi?id=15203
    ExploitIssue TrackingPatchThird Party Advisory
  • github.com https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
    PatchThird Party Advisory