CVE-2022-42898
HIGH8.8EPSS 8.3%krb5 - security update
Published: 12/25/2022Modified: 4/28/2026
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."
Affected packages (8)
- Alpine/heimdalfrom 0, < 7.7.1-r0
- Alpine/krb5from 0, < 1.19.4-r0
- Alpine/sambafrom 0, < 4.15.12-r0
- Debian/heimdalfrom 0, < 7.7.0+dfsg-2+deb11u2
- Debian/krb5from 0, < 1.18.3-6+deb11u3
- Debian/krb5from 0, < 1.17-3+deb10u5
- Debian/krb5from 0, < 1.18.3-6+deb11u3
- Debian/sambafrom 0
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |