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Test ID:1.3.6.1.4.1.25623.1.2.1.2017.27
Category:General
Title:Mozilla Firefox Security Advisory (MFSA2017-27) - Linux
Summary:This host is missing a security update for Mozilla Firefox.
Description:Summary:
This host is missing a security update for Mozilla Firefox.

Vulnerability Insight:
CVE-2017-7843: Web worker in Private Browsing mode can write IndexedDB data
When Private Browsing mode is used, it is possible for a web worker to write persistent data to IndexedDB and fingerprint a user uniquely. IndexedDB should not be available in Private Browsing mode and this stored data will persist across multiple private browsing mode sessions because it is not cleared when exiting.

CVE-2017-7844: Visited history information leak through SVG image
A combination of an external SVG image referenced on a page and the coloring of anchor links stored within this image can be used to determine which pages a user has in their history. This can allow a malicious website to query user history. Note: This issue only affects Firefox 57. Earlier releases are not affected.

Affected Software/OS:
Firefox version(s) below 57.0.1.

Solution:
The vendor has released an update. Please see the reference(s) for more information.

CVSS Score:
5.0

CVSS Vector:
AV:N/AC:L/Au:N/C:P/I:N/A:N

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2017-7843
BugTraq ID: 102039
http://www.securityfocus.com/bid/102039
BugTraq ID: 102112
http://www.securityfocus.com/bid/102112
Debian Security Information: DSA-4062 (Google Search)
https://www.debian.org/security/2017/dsa-4062
https://lists.debian.org/debian-lts-announce/2017/12/msg00003.html
RedHat Security Advisories: RHSA-2017:3382
https://access.redhat.com/errata/RHSA-2017:3382
http://www.securitytracker.com/id/1039954
Common Vulnerability Exposure (CVE) ID: CVE-2017-7844
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