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Ubuntu: 3175-1 Critical: Firefox Denial of Service Threats Detected

ubuntu
Calendar Grey January 27, 2017
Scroller Ubuntu Esm H88
Ubuntu users should promptly review the latest security advisory for severe Firefox vulnerabilities that risk data safety. Apply updates and patches.
Firefox could be made to crash or run programs as your login if it opened a malicious website.

Summary

Firefox could be made to crash or run programs as your login if it

opened a malicious website.

Software Description:

- firefox: Mozilla Open Source web browser

Details:

Multiple memory safety issues were discovered in Firefox. If a user were

tricked in to opening a specially crafted website, an attacker could

potentially exploit these to cause a denial of service via application

crash, or execute arbitrary code. (CVE-2017-5373, CVE-2017-5374)

JIT code allocation can allow a bypass of ASLR protections in some

circumstances. If a user were tricked in to opening a specially crafted

website, an attacker could potentially exploit this to cause a denial of

service via application crash, or execute arbitrary code. (CVE-2017-5375)

Nicolas Grégoire discovered a use-after-free when manipulating XSL in

XSLT documents in some circumstances. If a user were tricked in to opening

a specially crafted website, an attacker could potentially exploit this to

cause a denial ...

Read the Full Advisory

Topics%20covered

Topics Covered

security advisory denial of service critical threat firefox application crash ubuntu memory safety

Update Instructions

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

Ubuntu 16.10:
  firefox                         51.0.1+build2-0ubuntu0.16.10.1

Ubuntu 16.04 LTS:
  firefox                         51.0.1+build2-0ubuntu0.16.04.1

Ubuntu 14.04 LTS:
  firefox                         51.0.1+build2-0ubuntu0.14.04.1

Ubuntu 12.04 LTS:
  firefox                         51.0.1+build2-0ubuntu0.12.04.1

After a standard system update you need to restart Firefox to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-3175-1

CVE-2017-5373, CVE-2017-5374, CVE-2017-5375, CVE-2017-5376,

CVE-2017-5377, CVE-2017-5378, CVE-2017-5379, CVE-2017-5380,

CVE-2017-5381, CVE-2017-5382, CVE-2017-5383, CVE-2017-5384,

CVE-2017-5385, CVE-2017-5386, CVE-2017-5387, CVE-2017-5388,

CVE-2017-5389, CVE-2017-5390, CVE-2017-5391, CVE-2017-5393,

CVE-2017-5396

Severity
critical
Lowest
Low
Medium
High
Critical

January 27, 2017

Topics%20covered

Topics Covered

security advisory denial of service critical threat firefox application crash ubuntu memory safety

Package Information

https://launchpad.net/ubuntu/+source/firefox/51.0.1+build2-0ubuntu0.16.10.1
https://launchpad.net/ubuntu/+source/firefox/51.0.1+build2-0ubuntu0.16.04.1
https://launchpad.net/ubuntu/+source/firefox/51.0.1+build2-0ubuntu0.14.04.1
https://launchpad.net/ubuntu/+source/firefox/51.0.1+build2-0ubuntu0.12.04.1

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