TTCSIRT-039.090617: TT-CSIRT Advisory – Chrome Security Updates

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:

a) Use after free in PDFium – (CVE-2017-5111)
b) Heap buffer overflow in WebGL -(CVE-2017-5112)
c) Heap buffer overflow in Skia – (CVE-2017-5113)
d) Memory lifecycle issue in PDFium – (CVE-2017-5114)
e) Type confusion in V8. (CVE-2017-5115, CVE-2017-5116)
f) Use of uninitialized value in Skia – (CVE-2017-5117)
g) Bypass of Content Security Policy in Blink – (CVE-2017-5118)
h) Use of uninitialized value in Skia (CVE-2017-5119)
i) Potential HTTPS downgrade during redirect navigation – (CVE-2017-5120)

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.