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Ubuntu 16.04 ESM: USN-5310-2 Critical Glibc Buffer Overflow Fix

ubuntu
Calendar Grey March 7, 2022
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-5310-2 highlights glibc flaws and provides guidance to mitigate significant risks.
Several security issues were fixed in GNU C Library.

Summary

Several security issues were fixed in GNU C Library.

Software Description:

- glibc: GNU C Library

Details:

USN-5310-1 fixed several vulnerabilities in GNU. This update provides

the corresponding update for Ubuntu 16.04 ESM.

Original advisory details:

It was discovered that the GNU C library getcwd function incorrectly

handled buffers. An attacker could use this issue to cause the GNU C

Library to crash, resulting in a denial of service, or possibly execute

arbitrary code. (CVE-2021-3999)

It was discovered that the GNU C Library sunrpc module incorrectly handled

buffer lengths. An attacker could possibly use this issue to cause the GNU

C Library to crash, resulting in a denial of service. (CVE-2022-23218,

CVE-2022-23219)

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical software update Ubuntu glibc

Update Instructions

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

Ubuntu 16.04 ESM:
  libc6                           2.23-0ubuntu11.3+esm1

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-5310-2

https://ubuntu.com/security/notices/USN-5310-1

CVE-2021-3999, CVE-2022-23218, CVE-2022-23219

Severity
critical
Lowest
Low
Medium
High
Critical

March 07, 2022

Topics%20covered

Topics Covered

security advisory denial of service buffer overflow critical software update Ubuntu glibc

Package Information

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