CVE-2021-1782
Apple Multiple Products Race Condition Vulnerability
Does this matter?
Known to be exploited in the wild (CISA KEV, CISA remediation deadline 17 November 2021). Treat as an emergency change: patch or isolate now, then hunt for prior compromise.
Description
A race condition was addressed with improved locking. This issue is fixed in macOS Big Sur 11.2, Security Update 2021-001 Catalina, Security Update 2021-001 Mojave, watchOS 7.3, tvOS 14.4, iOS 14.4 and iPadOS 14.4. A malicious application may be able to elevate privileges. Apple is aware of a report that this issue may have been actively exploited..
- CVSS 3.1
- 7.0 HIGHCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 2.22% probability · 82th percentile
- CISA KEV
- Listed 3 November 2021 · due 17 November 2021
- Weakness
- CWE-667
- Affected
- apple/ipados · apple/iphone os · apple/mac os x · apple/macos · apple/tvos · apple/watchos
- Source
- product-security@apple.com
CISA notes
Apply updates per vendor instructions. https://nvd.nist.gov/vuln/detail/CVE-2021-1782
References
- https://support.apple.com/en-us/HT212146Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212147Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212148Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212149Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212146Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212147Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212148Release Notes, Vendor Advisory
- https://support.apple.com/en-us/HT212149Release Notes, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1782US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.