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Ubuntu 16.04: USN-5699-1 Moderate: glibc Denial of Service

ubuntu
Calendar Grey October 25, 2022
Dist Ubuntu Esm H88
Ubuntu Security Advisory USN-5699-1 highlights critical glibc vulnerabilities impacting Ubuntu 16.04 ESM, posing potential denial of service threats.
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:

Jan Engelhardt, Tavis Ormandy, and others discovered that the GNU C

Library iconv feature incorrectly handled certain input sequences. An

attacker could possibly use this issue to cause the GNU C Library to

hang or crash, resulting in a denial of service. (CVE-2021-3326)

It was discovered that the GNU C Library nscd daemon incorrectly handled

certain netgroup lookups. An attacker could possibly use this issue to

cause the GNU C Library to crash, resulting in a denial of service.

(CVE-2021-35942)

Topics%20covered

Topics Covered

security advisory denial of service security issue glibc ubuntu

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+esm2

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

References

https://ubuntu.com/security/notices/USN-5699-1

CVE-2021-3326, CVE-2021-35942

October 25, 2022

Topics%20covered

Topics Covered

security advisory denial of service security issue glibc ubuntu

Package Information

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