Multiple vulnerabilities in Google Chrome

Обновлено: 03/06/2020
Дата обнаружения
Уровень угрозы

Multiple serious vulnerabilities have been found in Google Chrome. Malicious users can exploit these vulnerabilities to cause denial of service or bypass security restrictions.

Below is a complete list of vulnerabilities

  1. Lack of URL schemes validation at Developer Tools can be exploited remotely via a specially designed URL to bypass security restrictions;
  2. Miscalculation at PDFium can be exploited remotely via a specially designed PDF to cause denial of service;
  3. Lack of restrictions at Chrome Instant can be exploited remotely to bypass security restrictions;
  4. An integer underflow at Brotli can be exploited remotely via a specially designed data to cause denial of service;
  5. Lack of frame operations restrictions at DOM implementation can be exploited remotely via a specially designed web site to bypass security restrictions;
  6. Lack of restrictions at Extensions can be exploited remotely via a specially designed JavaScript code to bypass security restrictions.

Technical details

Vulnerability (1) related to browser/devtools/devtools_ui_bindings.cc and WebKit/Source/devtools/front_end/Runtime.js which does not ensure that the remoteBase parameter is associated with a chrome-devtools-frontend.appspot.com URL.

Vulnerability (2) related to the opj_pi_update_decode_poc function in pi.c at OpenJPEG which miscalculates a certain layer index value. This miscalculate can lead to out-of-bounds read.

Vulnerability (3) caused by not ensuring that New Tab Page navigation target is on the most-visited or suggestions list and related to instant_service.cc and search_tab_helper.cc

Vulnerability (4) related to the ProcessCommandsInternal function in dec/decode.c and can be exploited via data with brotli compression.

Vulnerability (5) related to FrameLoader.cpp, HTMLFrameOwnerElement.h, LocalFrame.cpp, and WebLocalFrameImpl.cpp which does no properly restrict frame-attach operations occurring during or after frame-detach operations. Exploitation of this vulnerability can lead to bypass of Same Origin Policy.

Vulnerability (6) caused by not preventing Object.defineProperty method from overriding intended extension behavior. Exploitation of this vulnerability violates Same Origin Policy.

Пораженные продукты

Google Chrome versions earlier than 48.0.2564.109


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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Первичный источник обнаружения
Google Chrome Releases Blog entry
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