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Ubuntu 12.04 LTS USN-3239-3 Moderate: eglibc IPv6 Resolution Issue

ubuntu
Calendar Grey March 24, 2017
Dist Ubuntu Esm H88
Revision for Ubuntu 12.04 LTS addresses a bug in GNU C Library that impacts IPv6 name resolution.
USN-3239-1 introduced a regression in the GNU C Library.

Summary

USN-3239-1 introduced a regression in the GNU C Library.

Software Description:

- eglibc: GNU C Library

Details:

USN-3239-1 fixed vulnerabilities in the GNU C Library. Unfortunately,

the fix for CVE-2016-3706 introduced a regression that in some

circumstances prevented IPv6 addresses from resolving. This update

reverts the change in Ubuntu 12.04 LTS. We apologize for the error.

Original advisory 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)

...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu eglibc regression

Update Instructions

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

Ubuntu 12.04 LTS:
  libc6                           2.15-0ubuntu10.18

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

References

https://ubuntu.com/security/notices/USN-3239-3

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

https://bugs.launchpad.net/glibc/+bug/1674776

Severity
important
Lowest
Low
Medium
High
Critical

March 24, 2017

Topics%20covered

Topics Covered

security advisory moderate denial of service Ubuntu eglibc regression

Package Information

https://launchpad.net/ubuntu/+source/eglibc/2.15-0ubuntu10.18

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