Resource management error in macOS - CVE-2021-1855
Published: April 27, 2021
Vulnerability identifier: #VU52671
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2021-1855
CWE-ID: CWE-399
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Apple Inc.
Affected software:
macOS
macOS
Detailed vulnerability description
The vulnerability allows a remote attacker to perform unnecessary network connections.
The vulnerability exists due to improper management of internal resources within Safari on macOS. A remote attacker can create a specially crafted website and force unnecessary network connections to fetch its favicon.
How to mitigate CVE-2021-1855
Install updates from vendor's website.