KLA10766 Multiple vulnerabilities in Google Chrome

Multiple serious vulnerabilities have been found in Google Chrome. Malicious users can exploit these vulnerabilities to cause denial of service or possibly execute arbitrary code.

Below is a complete list of vulnerabilities

1. An improper user agent shadow DOM implementation at Blink can be exploited to cause denial of service or conduct another impact;
2. Lack of relayout scheduling restrictions at Blink can be exploited remotely via a specially designed HTML to cause denial of service or conduct another impact;
3. Multiple integer signedness errors at PDFium can be exploited remotely to cause denial of service or conduct another impact via a specially designed JPEG2000 data.

Technical details

Vulnerability (1) related to ImageInputType::ensurePrimaryContent function in WebKit/Source/core/html/forms/ImageInputType.cpp. This vulnerability can be exploited via vectors related to type confusion.

Vulnerability (2) related to WebKit/Source/core/layout/LayoutObject.cpp

Vulnerability (3) related to opj_j2k_update_image_data function at j2k.c in OpenJPEG.

Original advisories

Google Chrome releases blog entry

Related products

Google-Chrome

CVE list

CVE-2016-1644 critical

CVE-2016-1643 critical

CVE-2016-1645 critical

Solution

Update to the latest version. File with name old_chrome can be still detected after update. It caused by Google Chrome update policy which does not remove old versions when installing updates. Try to contact vendor for further delete instructions or ignore such kind of alerts at your own risk.

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Impacts

• ACE

Arbitrary code execution. Exploitation of vulnerabilities with this impact can lead to executing by abuser any code or commands at vulnerable machine or process.

• DoS

Denial of service. Exploitation of vulnerabilities with this impact can lead to loss of system availability or critical functional fault.

Affected Products

• Google Chrome versions earlier than 49.0.2623.87 (All branches)