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Ubuntu 16.04 ESM USN-5768-1: Glibc Denial of Service Risks

ubuntu
Calendar Grey December 8, 2022
Dist Ubuntu Esm H88
Ubuntu Security Notice USN-5769-1 highlights vulnerabilities in OpenSSL that may compromise system integrity and lead to potential breaches.
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-2016-10228, CVE-2019-25013,

CVE-2020-27618)

It was discovered that the GNU C Library did not properly handled DNS

responses when ENDS0 is enabled. An attacker could possibly use this issue

to cause fragmentation-based attacks. (CVE-2017-12132)

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu glibc GNU C Library

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+esm3

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

References

https://ubuntu.com/security/notices/USN-5768-1

CVE-2016-10228, CVE-2017-12132, CVE-2019-25013, CVE-2020-27618

Severity
critical
Lowest
Low
Medium
High
Critical

December 08, 2022

Topics%20covered

Topics Covered

security advisory denial of service Ubuntu glibc GNU C Library

Package Information

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