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Ubuntu 18.04 LTS: 5254-1 Moderate: Shadow Information Exposure

ubuntu
Calendar Grey January 27, 2022
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-5254-1 highlights critical shadow vulnerabilities recently fixed. Admins must update the shadow package to ensure system integrity and security
Several security issues were fixed in shadow.

Summary

Several security issues were fixed in shadow.

Software Description:

- shadow: system login tools

Details:

It was discovered that shadow incorrectly handled certain inputs.

An attacker could possibly use this issue to cause a crash or

expose sensitive information. This issue only affected

Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. (CVE-2017-12424)

It was discovered that shadow incorrectly handled certain inputs.

An attacker could possibly use this issue to expose sensitive information.

(CVE-2018-7169)

Topics%20covered

Topics Covered

security advisory Ubuntu system update information exposure shadow

Update Instructions

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

Ubuntu 18.04 LTS:
  login                           1:4.5-1ubuntu2.2
  passwd                          1:4.5-1ubuntu2.2
  uidmap                          1:4.5-1ubuntu2.2

Ubuntu 16.04 ESM:
  login                           1:4.2-3.1ubuntu5.5+esm1
  passwd                          1:4.2-3.1ubuntu5.5+esm1
  uidmap                          1:4.2-3.1ubuntu5.5+esm1

Ubuntu 14.04 ESM:
  login                           1:4.1.5.1-1ubuntu9.5+esm1
  passwd                          1:4.1.5.1-1ubuntu9.5+esm1
  uidmap                          1:4.1.5.1-1ubuntu9.5+esm1

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

References

https://ubuntu.com/security/notices/USN-5254-1

CVE-2017-12424, CVE-2018-7169

Severity
important
Lowest
Low
Medium
High
Critical

January 27, 2022

Topics%20covered

Topics Covered

security advisory Ubuntu system update information exposure shadow

Package Information

https://launchpad.net/ubuntu/+source/shadow/1:4.5-1ubuntu2.2

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