CVE-2015-2733

Description

Use-after-free vulnerability in the CanonicalizeXPCOMParticipant function in Mozilla Firefox before 39.0 and Firefox ESR 31.x before 31.8 and 38.x before 38.1 allows remote attackers to execute arbitrary code via vectors involving attachment of an XMLHttpRequest object to a dedicated worker.

10.0

CVSS

Severity: Critical

CVSS 2.0 •

EPSS 2.98% Top 15%

Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory gentoo.org Vendor Advisory redhat.com Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory mozilla.org

Affected: n/a n/a

References

Link	Tags
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00025.html	vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00033.html	third party advisory vendor advisory
https://security.gentoo.org/glsa/201512-10	vendor advisory
https://bugzilla.mozilla.org/show_bug.cgi?id=1169867	issue tracking
http://www.securityfocus.com/bid/75541	vdb entry
http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html	third party advisory
http://www.securitytracker.com/id/1032784	vdb entry
http://rhn.redhat.com/errata/RHSA-2015-1207.html	vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00034.html	third party advisory vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-07/msg00031.html	vendor advisory
http://www.mozilla.org/security/announce/2015/mfsa2015-65.html	vendor advisory
http://www.ubuntu.com/usn/USN-2656-1	vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2015-08/msg00021.html	vendor advisory
http://www.securitytracker.com/id/1032783	vdb entry
http://www.ubuntu.com/usn/USN-2656-2	vendor advisory
http://www.oracle.com/technetwork/topics/security/bulletinoct2015-2511968.html	third party advisory

Frequently Asked Questions

What is the severity of CVE-2015-2733?: CVE-2015-2733 has been scored as a critical severity vulnerability.
How to fix CVE-2015-2733?: To fix CVE-2015-2733, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-2733 being actively exploited in the wild?: It is possible that CVE-2015-2733 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.