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Ubuntu 16.04 LTS USN-3239-1 Critical: glibc Security Issues

ubuntu
Calendar Grey March 21, 2017
Dist Ubuntu Esm H88
Ubuntu Security Update USN-4651-3 addresses significant vulnerabilities within the OpenSSL library impacting various Ubuntu versions.
Several security issues were fixed in the GNU C Library.

Summary

Several security issues were fixed in the GNU C Library.

Software Description:

- glibc: GNU C Library

- eglibc: GNU C Library

Details:

It was discovered that the GNU C Library incorrectly handled the

strxfrm() function. An attacker could use this issue to cause a denial

of service or possibly execute arbitrary code. This issue only affected

Ubuntu 12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8982)

It was discovered that an integer overflow existed in the

_IO_wstr_overflow() function of the GNU C Library. An attacker could

use this to cause a denial of service or possibly execute arbitrary

code. This issue only affected Ubuntu 12.04 LTS and Ubuntu 14.04

LTS. (CVE-2015-8983)

It was discovered that the fnmatch() function in the GNU C Library

did not properly handle certain malformed patterns. An attacker could

use this to cause a denial of service. This issue only affected Ubuntu

12.04 LTS and Ubuntu 14.04 LTS. (CVE-2015-8984)

Alexander Cherepanov discovered a stack-based buffer ov...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service security issue software update glibc ubuntu

Update Instructions

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

Ubuntu 16.04 LTS:
  libc6                           2.23-0ubuntu6

Ubuntu 14.04 LTS:
  libc6                           2.19-0ubuntu6.10

Ubuntu 12.04 LTS:
  libc6                           2.15-0ubuntu10.16

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

References

https://ubuntu.com/security/notices/USN-3239-1

CVE-2015-5180, CVE-2015-8982, CVE-2015-8983, CVE-2015-8984,

CVE-2016-1234, CVE-2016-3706, CVE-2016-4429, CVE-2016-5417,

CVE-2016-6323

Severity
critical
Lowest
Low
Medium
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Critical

March 21, 2017

Topics%20covered

Topics Covered

security advisory denial of service security issue software update glibc ubuntu

Package Information

https://launchpad.net/ubuntu/+source/glibc/2.23-0ubuntu6
https://launchpad.net/ubuntu/+source/eglibc/2.19-0ubuntu6.10
https://launchpad.net/ubuntu/+source/eglibc/2.15-0ubuntu10.16

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