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Ubuntu: 4314-1 Critical Vulnerability in pam-krb5 Code Execution Risk

ubuntu
Calendar Grey March 31, 2020
Dist Ubuntu Esm H88
In a recent update, Ubuntu Security Notice USN-4314-1 discloses a significant vulnerability in libpam-krb5 that allows for unauthorized execution of code.
pam-krb5 could be made to execute arbitrary code if it received a specially crafted response.

Summary

pam-krb5 could be made to execute arbitrary code if it received a specially

crafted response.

Software Description:

- libpam-krb5: PAM module for MIT Kerberos

Details:

Russ Allbery discovered that pam-krb5 incorrectly handled some responses.

An attacker could possibly use this issue to execute arbitrary code.

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 19.10:
  libpam-krb5                     4.8-2ubuntu0.1

Ubuntu 18.04 LTS:
  libpam-krb5                     4.8-1ubuntu0.1

Ubuntu 16.04 LTS:
  libpam-krb5                     4.7-2ubuntu0.1

Ubuntu 14.04 ESM:
  libpam-krb5                     4.6-2ubuntu0.1~esm1

Ubuntu 12.04 ESM:
  libpam-krb5                     4.5-3ubuntu0.1

In general, a standard system update will make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4314-1

CVE-2020-10595

Severity
critical
Lowest
Low
Medium
High
Critical

March 31, 2020

Package Information

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