Alerts This Week
Warning Icon 1 1,154
Alerts This Week
Warning Icon 1 1,154

Ubuntu 16.04 LTS USN-4954-1 Critical: glibc Denial of Service

ubuntu
Calendar Grey May 13, 2021
Dist Ubuntu Esm H88
Numerous bugs resolved in the GNU C Library for Ubuntu 16.04 LTS, affecting both system reliability and security measures.
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:

Jason Royes and Samuel Dytrych discovered that the memcpy()

implementation for 32 bit ARM processors in the GNU C Library contained

an integer underflow vulnerability. An attacker could possibly use

this to cause a denial of service (application crash) or execute

arbitrary code. (CVE-2020-6096)

It was discovered that the POSIX regex implementation in the GNU C

Library did not properly parse alternatives. An attacker could use this

to cause a denial of service. (CVE-2009-5155)

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu glibc update instructions application crash ubuntu critical impact GNU C Library

Update Instructions

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

Ubuntu 16.04 LTS:
  libc6                           2.23-0ubuntu11.3

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

References

https://ubuntu.com/security/notices/USN-4954-1

CVE-2009-5155, CVE-2020-6096

Severity
critical
Lowest
Low
Medium
High
Critical

May 14, 2021

Topics%20covered

Topics Covered

security advisory denial of service critical Ubuntu glibc update instructions application crash ubuntu critical impact GNU C Library

Package Information

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.

Your message here