Ubuntu.comUB:CVE-2022-42898CVE-2022-42898
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
80.5%
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.”
Bugs
- <https://bugzilla.samba.org/show_bug.cgi?id=15203>
- <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1024187>
- <http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1024267>
Notes
| Author | Note |
|---|---|
| mdeslaur | Per upstream Samba advisory, this is only an issue on 32-bit systems. |
| rodrigo-zaiden | a regression in heimdal was reported by samba and fixed in https://github.com/heimdal/heimdal/pull/1025 |
| mdeslaur | See samba bug for samba regression fix not yet commited The focal samba update was temporarily reverted by USN 5822-2 because it introduced regressions. It was later updated again with USN 5936-1. |
| OS | Version | Architecture | Package | Version | Filename |
|---|---|---|---|---|---|
| ubuntu | 18.04 | noarch | heimdal | < 7.5.0+dfsg-1ubuntu0.3 | UNKNOWN |
| ubuntu | 20.04 | noarch | heimdal | < 7.7.0+dfsg-1ubuntu1.3 | UNKNOWN |
| ubuntu | 22.04 | noarch | heimdal | < any | UNKNOWN |
| ubuntu | 24.04 | noarch | heimdal | < any | UNKNOWN |
| ubuntu | 14.04 | noarch | heimdal | < 1.6~git20131207+dfsg-1ubuntu1.2+esm3 | UNKNOWN |
| ubuntu | 16.04 | noarch | heimdal | < 1.7~git20150920+dfsg-4ubuntu1.16.04.1+esm3 | UNKNOWN |
| ubuntu | 18.04 | noarch | krb5 | < 1.16-2ubuntu0.3 | UNKNOWN |
| ubuntu | 20.04 | noarch | krb5 | < 1.17-6ubuntu4.2 | UNKNOWN |
| ubuntu | 22.04 | noarch | krb5 | < 1.19.2-2ubuntu0.1 | UNKNOWN |
| ubuntu | 22.10 | noarch | krb5 | < 1.20-1ubuntu0.1 | UNKNOWN |
References
github.com/heimdal/heimdal/security/advisories/GHSA-64mq-fvfj-5x3c
launchpad.net/bugs/cve/CVE-2022-42898
nvd.nist.gov/vuln/detail/CVE-2022-42898
security-tracker.debian.org/tracker/CVE-2022-42898
ubuntu.com/security/notices/USN-5800-1
ubuntu.com/security/notices/USN-5822-1
ubuntu.com/security/notices/USN-5822-2
ubuntu.com/security/notices/USN-5828-1
ubuntu.com/security/notices/USN-5936-1
www.cve.org/CVERecord?id=CVE-2022-42898
www.samba.org/samba/security/CVE-2022-42898.html
Related
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS
Percentile
80.5%