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Multiple Vulnerabilities in Google Chrome Could Allow for Arbitrary Code Execution

MS-ISAC ADVISORY NUMBER:

2017-123

DATE(S) ISSUED:

12/07/2017

OVERVIEW:

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could result in arbitrary code execution. Google Chrome is a web browser used to access the Internet. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser, obtain sensitive information, bypass security restrictions and perform unauthorized actions, or cause denial-of-service conditions.

THREAT INTELLIGENCE:

There are currently no reports of these vulnerabilities being exploited in the wild.

SYSTEMS AFFECTED:

  • Google Chrome prior to 63.0.3239.84

RISK:

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

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Google Chrome, the most severe of which could result in arbitrary code execution. These vulnerabilities can be exploited if a user visits, or is redirected to, a specially crafted web page. Details of the vulnerabilities are as follows:

  • Out of bounds write in QUIC (CVE-2017-15407)
  • Heap buffer overflow in PDFium (CVE-2017-15408)
  • Out of bounds write in Skia (CVE-2017-15409)
  • Use after free in PDFium (CVE-2017-15410, CVE-2017-15411)
  • Use after free in libXML (CVE-2017-15412)
  • Type confusion in WebAssembly (CVE-2017-15413)
  • Pointer information disclosure in IPC call (CVE-2017-15415)
  • Out of bounds read in Blink (CVE-2017-15416)
  • Cross origin information disclosure in Skia (CVE-2017-15417)
  • Use of uninitialized value in Skia (CVE-2017-15418)
  • Cross origin leak of redirect URL in Blink (CVE-2017-15419)
  • URL spoofing in Omnibox (CVE-2017-15420)
  • Integer overflow in ICU (CVE-2017-15422)
  • Issue with SPAKE implementation in BoringSSL (CVE-2017-15423)
  • URL Spoof in Omnibox (CVE-2017-15424, CVE-2017-15425, CVE-2017-15426)
  • Insufficient blocking of JavaScript in Omnibox (CVE-2017-15427)

Successful exploitation of the most severe of these vulnerabilities could allow an attacker to execute arbitrary code in the context of the browser, obtain sensitive information, bypass security restrictions and perform unauthorized actions, or cause denial-of-service conditions.

RECOMENDATIONS:

We recommend the following actions be taken:

  • Apply stable channel update provided by Google 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 visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from un-trusted sources.
  • Apply the Principle of Least Privilege to all systems and services.

REFERENCES:

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