An integer overflow was addressed with improved input validation.
Affects Apple macOS Big Sur and Catalina (CoreGraphics component), plus iOS and watchOS. Fixed in macOS 11.6, iOS 14.8, and watchOS 7.6, and in Security Update 2021-005 for Catalina.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 11.6, 2021-005, 7.6, 14.8
- 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's macOS, iOS, iPadOS, and watchOS are affected. A maliciously crafted PDF processed on these systems could allow an attacker to run arbitrary code.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
An integer overflow was addressed with improved input validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. Processing a maliciously crafted PDF may lead to arbitrary code execution. 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
- EPSS reached 10%
FIRST estimates at least a 10% chance of exploitation in the next 30 days
Affected versions
- Apple macOS
From unspecified · fixed in 11.6
- Apple macOS
From unspecified · fixed in 2021-005
- Apple watchOS
From unspecified · fixed in 7.6
- Apple iOS
From unspecified · fixed in 14.8
References 15
support.apple.com
seclists.org
openwall.com
security.gentoo.org
Questions about CVE-2021-30860
What does this mean?
An integer overflow in CoreGraphics could be triggered by processing a maliciously crafted PDF, which may lead to arbitrary code execution. Apple fixed it with improved input validation.Source: support.apple.com, support.apple.com
Am I affected, and how do I check?
The advisory lists macOS Big Sur and macOS Catalina (CoreGraphics component) as affected, with earlier versions unspecified. Compare the installed version against the fixed versions: macOS 11.6, Security Update 2021-005 for Catalina, iOS 14.8, and watchOS 7.6.Source: support.apple.com, support.apple.com
What should I do about it?
Update macOS to 11.6 or install Security Update 2021-005 for Catalina. Update iOS to 14.8 and watchOS to 7.6.Source: support.apple.com, 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