CVE-2022-42898
High
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."
SeverityHigh
CVSS8.8
Exploit probability—
ProductMit Kerberos
PublishedDec 25, 2022
First seenDec 25, 2022
Weakness typeCWE-190Integer overflow
How to fix
Update
- mit kerberos_51.19.4 or later
- heimdal_project heimdal7.7.1 or later
- samba samba4.15.12, 4.16.7, 4.17.3 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| mit kerberos_5 | 1.8 ≤ v < 1.19.4, 1.20 | 1.19.4 |
| heimdal_project heimdal | v < 7.7.1 | 7.7.1 |
| samba samba | v < 4.15.12, 4.16.0 ≤ v < 4.16.7, 4.17.0 ≤ v < 4.17.3 | 4.15.12, 4.16.7, 4.17.3 |
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