3.5 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:N/I:N/A:P
8.8 High
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
0.005 Low
EPSS
Percentile
76.3%
Medium
Canonical Ubuntu
It was discovered that Kerberos incorrectly handled certain S4U2Self requests. An attacker could possibly use this issue to cause a denial of service. This issue was only addressed in Ubuntu 16.04 ESM and Ubuntu 18.04 LTS. (CVE-2018-20217) Greg Hudson discovered that Kerberos PAC implementation incorrectly handled certain parsing operations. A remote attacker could use this issue to cause a denial of service, or possibly execute arbitrary code. (CVE-2022-42898) Update Instructions: Run sudo pro fix USN-5828-1
to fix the vulnerability. The problem can be corrected by updating your system to the following package versions: libkadm5srv-mit9 – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-doc – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-user – 1.13.2+dfsg-5ubuntu2.2+esm3 libgssrpc4 – 1.13.2+dfsg-5ubuntu2.2+esm3 libkrb5support0 – 1.13.2+dfsg-5ubuntu2.2+esm3 libk5crypto3 – 1.13.2+dfsg-5ubuntu2.2+esm3 libkrb5-dev – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-pkinit – 1.13.2+dfsg-5ubuntu2.2+esm3 libkrb5-3 – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-kdc-ldap – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-otp – 1.13.2+dfsg-5ubuntu2.2+esm3 libkadm5clnt-mit9 – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-gss-samples – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-multidev – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-locales – 1.13.2+dfsg-5ubuntu2.2+esm3 libgssapi-krb5-2 – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-kdc – 1.13.2+dfsg-5ubuntu2.2+esm3 libkrad-dev – 1.13.2+dfsg-5ubuntu2.2+esm3 libkdb5-8 – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-k5tls – 1.13.2+dfsg-5ubuntu2.2+esm3 libkrad0 – 1.13.2+dfsg-5ubuntu2.2+esm3 krb5-admin-server – 1.13.2+dfsg-5ubuntu2.2+esm3 Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro
CVEs contained in this USN include: CVE-2018-20217, CVE-2022-42898.
Severity is medium unless otherwise noted.
* 1.x versions prior to 1.174
* All versions prior to 0.351.0
* All versions prior to 0.62.0
* 1.x versions prior to 1.83
* All versions prior to 26.4.0, or later versions with Jammy Stemcells prior to 1.83, Bionic Stemcells prior to 1.174, or Xenial Stemcells prior to 621.418
Users of affected products are strongly encouraged to follow the mitigations below. The Cloud Foundry project recommends upgrading the following releases:
* Upgrade 1.x versions to 1.174 or greater
* Upgrade all versions to 0.351.0 or greater
* Upgrade all versions to 0.62.0 or greater
* Upgrade 1.x versions to 1.83 or greater
* Upgrade all versions to 26.4.0 or greater, upgrade Jammy Stemcells to 1.83 or greater, upgrade Bionic Stemcells to 1.174 or greater, and upgrade Xenial Stemcells to 621.418 or greater
2023-02-24: Initial vulnerability report published.
3.5 Low
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:M/Au:S/C:N/I:N/A:P
8.8 High
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
0.005 Low
EPSS
Percentile
76.3%