by Kastro
Paper/Archive/CVE-2021-1871

CVE-2021-1871

Apple iOS and iPadOS — Apple iOS, iPadOS, and macOS WebKit Remote Code Execution Vulnerability

KEV · due 17 NovEPSS 7%public exploitSSVC actCVSS 9.8
critical.is priorityof 100
98
CVSS 9.8 (ADP)9.8 / 10 × 3029.4In CISA KEV+3030.0EPSS percentile 94.1.941 × 2018.8Exploit: SSVC active+1010.0SSVC exploitation: active+1010.0
Description · from the CVE record

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..

Affected

ProductAffectedFixed inSource
iOS and iPadOSunspecified – < 14.414.4CNA
macOSunspecified – < 11.211.2CNA

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: active · Automatable: yes · Technical impact: total

References

refsupport.apple.com/en-us/HT212146refsupport.apple.com/en-us/HT212147advisorylists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/L3L6ZZOU5JS7E3RFYGLP7UFLXCG7TNLUadvisorydebian.org/security/2021/dsa-4923refcisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1871kevcisa.gov/known-exploited-vulnerabilities-catalog