High severity · published Dec 25, 2022
CVE-2022-42898
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…
8.8
CVSS
6.9%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)6.9% · higher than 94% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HE
Heimdal · Heimdal Project
before 7.7.1 · source: NVD
K5
Kerberos 5 · Mit
1.8 before 1.19.4; 1.20; 1.20 · source: NVD
SA
Samba · Samba
before 4.15.12; 4.16.0 before 4.16.7; 4.17.0 before 4.17.3 · source: NVD
SS
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5; V3.1.0 before V3.1.5 · source: CISA
SS
SIPLUS S7-1500 CPU 1518-4 PN/DP MFP · Siemens
V3.1.0 before V3.1.5 · source: CISA
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2022-42898
CVE.org
https://www.cve.org/CVERecord?id=CVE-2022-42898
Exploit
https://bugzilla.samba.org/show_bug.cgi?id=15203
Third Party Advisory
https://github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
Patch
https://github.com/krb5/krb5/commit/ea92d2f0fcceb54a70910fa32e9a0d7a5afc3583
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/
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