CVE-2017-5949

Description

JavaScriptCore in WebKit, as distributed in Safari Technology Preview Release 22, allows remote attackers to cause a denial of service (heap-based out-of-bounds write and application crash) or possibly have unspecified other impact via crafted JavaScript code that triggers access to red-zone memory locations, related to jit/ThunkGenerators.cpp, llint/LowLevelInterpreter32_64.asm, and llint/LowLevelInterpreter64.asm.

Category

9.8
CVSS
Severity: Critical
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.82% Top 20%
Third-Party Advisory securityfocus.com Third-Party Advisory webkit.org Third-Party Advisory webkit.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securityfocus.com/bid/97298 third party advisory vdb entry
https://trac.webkit.org/changeset/211479 third party advisory issue tracking
https://bugs.webkit.org/show_bug.cgi?id=167239 third party advisory issue tracking

Frequently Asked Questions

What is the severity of CVE-2017-5949?
CVE-2017-5949 has been scored as a critical severity vulnerability.
How to fix CVE-2017-5949?
To fix CVE-2017-5949, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-5949 being actively exploited in the wild?
It is possible that CVE-2017-5949 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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