CIS Logo
tagline: Confidence in the Connected World
HomeResourcesAdvisoriesCumulative Security Update for Internet Explorer (MS15-065)

Cumulative Security Update for Internet Explorer (MS15-065)

MS-ISAC ADVISORY NUMBER:

2015-081

DATE(S) ISSUED:

07/13/2015

OVERVIEW:

Multiple vulnerabilities have been discovered in Microsoft's web browser, Internet Explorer, which could allow an attacker to take complete control of an affected system. Successful exploitation of these vulnerabilities could result in an attacker gaining elevated privileges on the system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

THREAT INTELLIGENCE:

There is no known proof-of-concept code available at this time. Updates are available.

SYSTEMS AFFECTED:

  • Internet Explorer 6
  • Internet Explorer 7
  • Internet Explorer 8
  • Internet Explorer 9
  • Internet Explorer 10
  • Internet Explorer 11

RISK:

Government:
  • Large and medium government entities: HIGH
  • Small government entities: HIGH
Businesses:
  • Large and medium business entities: HIGH
  • Small business entities: HIGH
Home Users:
HIGH

TECHNICAL SUMMARY:

Multiple vulnerabilities were discovered in Internet Explorer due to the way objects in memory are improperly accessed. The vulnerabilities are as follows:

19 Memory Corruption Vulnerabilities (CVE-2015-1733, CVE-2015-1738, CVE-2015-1767, CVE-2015-2383, CVE-2015-2384, CVE-2015-2385, CVE-2015-2388, CVE-2015-2389, CVE-2015-2390, CVE-2015-2391, CVE-2015-2397, CVE-2015-2401, CVE-2015-2403, CVE-2015-2404, CVE-2015-2406, CVE-2015-2408, CVE-2015-2411, CVE-2015-2422, CVE-2015-2425)
5 Information Disclosure Vulnerabilities (CVE-2015-1729, CVE-2015-2410, CVE-2015-2412, CVE-2015-2413, CVE-2015-2414)
One Elevation of Privilege Vulnerability (CVE-2015-2402)
One ASLR Bypass Vulnerability (CVE-2015-2419)
One Cross Site Scripting Filter Bypass Vulnerability (CVE-2015-2398)
One Jscript9 Memory Corruption Vulnerability (CVE-2015-2419)
One VBScript Memory Corruption Vulnerability (CVE-2015-2372)
These vulnerabilities could allow an attacker to execute remote code by luring a victim to a malicious website. When the website is visited, the attacker's script will run with same permissions as the affected user account. Successful exploitation of these vulnerabilities could result in an attacker gaining elevated privileges on the system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

RECOMENDATIONS:

We recommend the following actions be taken:

Apply appropriate patches provided by Microsoft to vulnerable systems immediately after appropriate testing.
Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
Remind users not to click links from unknown sources, or to click links without verifying the intended destination.

REFERENCES:

CVE:
http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1729 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1733 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1738 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1767 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2372 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2383 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2384 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2385 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2388 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2389 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2390 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2391 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2397 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2398 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2401 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2402 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2403 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2404 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2406 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2408 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2410 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2411 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2412 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2413 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2414 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2419 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2421 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2422 http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-2425

Get Email Updates When Cyber Threats Like This Arise

Arrow Subscribe to Advisories