CVE-2017-17821: WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology Preview Release 46, allows remote attackers to cause a denial of service (buffer…

PriorityP339critical9.8CVSS 3.0

AVNACLPRNUINSUCHIHAH

EPSS

1.37%

68.5th percentile

WTF/wtf/FastBitVector.h in WebKit, as distributed in Safari Technology Preview Release 46, allows remote attackers to cause a denial of service (buffer overflow) or possibly have unspecified other impact because it calls the FastBitVectorWordOwner::resizeSlow function (in WTF/wtf/FastBitVector.cpp) for a purpose other than initializing a bitvector size, and resizeSlow mishandles cases where the old array length is greater than the new array length.

Affected

2 ranges

Vendor	Product	Version range	Fixed in
apple	safari	—	—
debian	webkit2gtk	< webkit2gtk 2.22.0-2 (bookworm)	webkit2gtk 2.22.0-2 (bookworm)

CVSS provenance

nvdv3.09.8CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

nvdv2.07.5HIGHAV:N/AC:L/Au:N/C:P/I:P/A:P

osv9.8CRITICAL

vendor_debian9.8LOW

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