Security Fixes and Rewards

Note: Access to bug details and links may be kept restricted until a majority of users are updated with a fix. We will also retain restrictions if the bug exists in a third party library that other projects similarly depend on, but haven’t yet fixed.

This update includes 47 security fixes. Below, we highlight fixes that were contributed by external researchers. Please see the Chrome Security Page for more information.

[$5000][ 956597 ] High CVE-2019-5828: Use after free in ServiceWorker. Reported by leecraso of Beihang University and Guang Gong of Alpha Team, Qihoo 360 on 2019-04-25

[$500][ 958533 ] High CVE-2019-5829: Use after free in Download Manager. Reported by Lucas Pinheiro, Microsoft Browser Vulnerability Research on 2019-05-01

[$TBD][ 665766 ] Medium CVE-2019-5830: Incorrectly credentialed requests in CORS. Reported by Andrew Krasichkov, Yandex Security Team on 2016-11-16

[$TBD][ 950328 ] Medium CVE-2019-5831: Incorrect map processing in V8. Reported by yngwei(JiaWei, Yin) of IIE Varas and sakura of Tecent Xuanwu Lab on 2019-04-07

[$TBD][ 959390 ] Medium CVE-2019-5832: Incorrect CORS handling in XHR. Reported by Sergey Shekyan (Shape Security) on 2019-05-03

[$N/A][ 945067 ] Medium CVE-2019-5833: Inconsistent security UI placement. Reported by Khalil Zhani on 2019-03-23

[$N/A][ 962368 ] Medium CVE-2019-5834: URL spoof in Omnibox on iOS. Reported by Khalil Zhani on 2019-05-13

[$1000][ 939239 ] Medium CVE-2019-5835: Out of bounds read in Swiftshader. Reported by Wenxiang Qian of Tencent Blade Team on 2019-03-07

[$1000][ 947342 ] Medium CVE-2019-5836: Heap buffer overflow in Angle. Reported by Omair on 2019-03-29

[$500][ 918293 ] Medium CVE-2019-5837: Cross-origin resources size disclosure in Appcache . Reported by Adam Iwaniuk on 2018-12-30

[$N/A][ 954891 Medium CVE-2019-5849: Out-of-bounds read in Skia. Reported by Zhen Zhou of NSFOCUS Security Team on 2019-04-22

[$500][ 893087 ] Low CVE-2019-5838: Overly permissive tab access in Extensions. Reported by David Erceg on 2018-10-08

[$500][ 925614 ] Low CVE-2019-5839: Incorrect handling of certain code points in Blink. Reported by Masato Kinugawa on 2019-01-26

[$N/A][ 951782 ] Low CVE-2019-5840: Popup blocker bypass. Reported by Eliya Stein, Jerome Dangu on 2019-04-11

We would also like to thank all security researchers that worked with us during the development cycle to prevent security bugs from ever reaching the stable channel.



As usual, our ongoing internal security work was responsible for a wide range of fixes:





[ 970244 ] Various fixes from internal audits, fuzzing and other initiatives