A race condition was addressed with improved locking.
Affects macOS Big Sur 11.0.1, Catalina 10.15.7 and Mojave 10.14.6 (kernel component). Fixed in macOS Big Sur 11.2 and Security Update 2021-001 for Catalina and Mojave.
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Listed in CISA KEV
- How many real-world setups can hit the bug, from the vendor's advisory and CISA data. It does not know your setup.What do these mean? →
- Actively exploited
- Fix
- Fixed in 14.4, 11.2, 7.3
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Apple operating systems, including macOS, watchOS, tvOS, iOS, and iPadOS, are affected. A malicious app could exploit a timing flaw to gain higher system privileges than it should have.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original 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..
Timeline
- CVE published
- Added to CISA KEV
CISA has evidence of exploitation in the wild
- CISA remediation deadline
Due date for US federal agencies to patch
- Record last updated
Affected versions
- Apple iOS and iPadOS
From unspecified · fixed in 14.4
- Apple macOS
From unspecified · fixed in 11.2
- Apple macOS
From unspecified · fixed in 7.3
- Apple macOS
From unspecified · fixed in 14.4
References 4
support.apple.com
Questions about CVE-2021-1782
What does this mean?
A race condition in the macOS kernel could let a malicious application elevate its privileges. Apple addressed it with improved locking.Source: support.apple.com
Am I affected, and how do I check?
The advisory lists macOS Big Sur 11.0.1, macOS Catalina 10.15.7 and macOS Mojave 10.14.6 as affected, in the kernel component. To check a Mac's version, open the Apple menu and choose About This Mac.Source: support.apple.com
What should I do about it?
Update to macOS Big Sur 11.2 or later. On Catalina or Mojave, install Security Update 2021-001.Source: support.apple.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2021-11-03, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data