High severity · published Aug 24, 2021
CVE-2021-30953
An out-of-bounds read was addressed with improved bounds checking
8.8
CVSS
2%
EPSS
No
On KEV
Description
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in tvOS 15.2, macOS Monterey 12.1, Safari 15.2, iOS 15.2 and iPadOS 15.2, watchOS 8.3. Processing maliciously crafted web content may lead to arbitrary code execution.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)2.0% · higher than 80% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IO
iOS · Apple
before 15.2 · source: NVD
MA
macOS · Apple
12.0.0 through 12.1 · source: NVD
DL
Debian Linux · Debian
10.0; 11.0 · source: NVD
FE
Fedora · Fedoraproject
34; 35 · source: NVD
SA
Safari · Apple
before 15.2 · source: NVD
TV
Tvos · Apple
before 15.2 · source: NVD
WA
Watchos · Apple
before 8.3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-30953
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-30953
www.openwall.com
http://www.openwall.com/lists/oss-security/2022/01/21/2
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EQVZ3CEMTINLBZ7PBC7WRXVEVCRHNSM/
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HQKWD4BXRDD2YGR5AVU7H5J5PIQIEU6V/
support.apple.com
https://support.apple.com/en-us/HT212975
support.apple.com
https://support.apple.com/en-us/HT212976
support.apple.com
https://support.apple.com/en-us/HT212978
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