CVE-2021-1871

critical
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

A logic issue was addressed with improved restrictions. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, iOS 14.4 and iPadOS 14.4. A remote attacker may be able to cause arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited..

References

https://support.apple.com/en-us/HT212146

https://support.apple.com/en-us/HT212147

https://lists.fedoraproject.org/archives/list/[email protected]/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLU/

https://www.debian.org/security/2021/dsa-4923

Details

Source: MITRE

Published: 2021-04-02

Updated: 2021-05-31

Risk Information

CVSS v2

Base Score: 7.5

Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P

Impact Score: 6.4

Exploitability Score: 10

Severity: HIGH

CVSS v3

Base Score: 9.8

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Impact Score: 5.9

Exploitability Score: 3.9

Severity: CRITICAL

Tenable Plugins

View all (12 total)

IDNameProductFamilySeverity
155421Oracle Linux 8 : GNOME (ELSA-2021-4381)NessusOracle Linux Local Security Checks
high
155153RHEL 8 : GNOME (RHSA-2021:4381)NessusRed Hat Local Security Checks
high
155097CentOS 8 : GNOME (CESA-2021:4381)NessusCentOS Local Security Checks
high
150913SUSE SLED12 / SLES12 Security Update : webkit2gtk3 (SUSE-SU-2021:1990-1)NessusSuSE Local Security Checks
critical
150095Debian DSA-4923-1 : webkit2gtk - security updateNessusDebian Local Security Checks
critical
149570openSUSE Security Update : webkit2gtk3 (openSUSE-2021-637)NessusSuSE Local Security Checks
critical
149419Ubuntu 18.04 LTS / 20.04 LTS / 20.10 : WebKitGTK vulnerabilities (USN-4939-1)NessusUbuntu Local Security Checks
critical
149278SUSE SLES15 Security Update : webkit2gtk3 (SUSE-SU-2021:1499-1)NessusSuSE Local Security Checks
critical
149203SUSE SLED15 / SLES15 Security Update : webkit2gtk3 (SUSE-SU-2021:1430-1)NessusSuSE Local Security Checks
critical
148778Fedora 33 : webkit2gtk3 (2021-864dc37032)NessusFedora Local Security Checks
critical
146086macOS 10.14.x < 10.14.6 Security Update 2021-001 / 10.15.x < 10.15.7 Security Update 2021-001 / macOS 11.x < 11.2 (HT212147)NessusMacOS X Local Security Checks
high
145548Apple iOS < 14.4 Multiple VulnerabilitiesNessusMobile Devices
high