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Ubuntu 24.04 LTS USN-6736-2 Moderate: Klibc Memory Issue

ubuntu
Calendar Grey May 23, 2024
Dist Ubuntu Esm H88
A critical klibc update has been released to address several security vulnerabilities for Ubuntu users, ensuring enhanced system protection and stability
Several security issues were fixed in klibc.

Summary

Several security issues were fixed in klibc.

Software Description:

- klibc: small utilities built with klibc for early boot

Details:

USN-6736-1 fixed vulnerabilities in klibc. This update provides the

corresponding updates for Ubuntu 24.04 LTS.

Original advisory details:

 It was discovered that zlib, vendored in klibc, incorrectly handled

pointer

 arithmetic. An attacker could use this issue to cause klibc to crash or to

 possibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)

 Danilo Ramos discovered that zlib, vendored in klibc, incorrectly handled

 memory when performing certain deflating operations. An attacker could use

 this issue to cause klibc to crash or to possibly execute arbitrary code.

 (CVE-2018-25032)

 Evgeny Legerov discovered that zlib, vendored in klibc, incorrectly

handled

 memory when performing certain inflate operations. An attacker could use

 this issue to cause klibc to crash or to possibly execu...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory moderate arbitrary code execution Ubuntu memory issue zlib klibc

Update Instructions

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

Ubuntu 24.04 LTS
    klibc-utils                     2.0.13-4ubuntu0.1
    libklibc                         2.0.13-4ubuntu0.1

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

References

   https://ubuntu.com/security/notices/USN-6736-2

   https://ubuntu.com/security/notices/USN-6736-1

   CVE-2016-9840, CVE-2016-9841, CVE-2018-25032, CVE-2022-37434

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-6736-2

Topics%20covered

Topics Covered

security advisory moderate arbitrary code execution Ubuntu memory issue zlib klibc

Package Information

   https://launchpad.net/ubuntu/+source/klibc/2.0.13-4ubuntu0.1

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