Known exploited vulnerability
CVE-2021-30860
The short answer
CVE-2021-30860 affects Apple macOS and is rated high (CVSS 7.8). CISA added it to the Known Exploited Vulnerabilities catalog on 2021-11-03: attackers are using it, so patch it first.
What it is
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.
Weakness: CWE-190.
Severity
7.8 high
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Exploited (CISA KEV)
Yes, since Nov 3, 2021
Federal due date Nov 17, 2021
EPSS, next 30 days
76%
Higher than 100% of scored CVEs
How it can be exploited
- Attack vector
- Local
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality impact
- High
- Integrity impact
- High
- Availability impact
- High
What CISA says to do
Apply updates per vendor instructions.
Affected products
macOS, watchOS, iOS. NVD's record lists the exact affected versions.
References
- security.gentoo.org/glsa/202209-21 Third Party Advisory
- support.apple.com/en-us/HT212804 Vendor Advisory
- support.apple.com/en-us/HT212805 Vendor Advisory
- support.apple.com/en-us/HT212806 Vendor Advisory
- support.apple.com/en-us/HT212807 Vendor Advisory
- support.apple.com/kb/HT212824 Vendor Advisory
- security.gentoo.org/glsa/202209-21 Third Party Advisory
- support.apple.com/en-us/HT212804 Vendor Advisory
- support.apple.com/en-us/HT212805 Vendor Advisory
- support.apple.com/en-us/HT212806 Vendor Advisory
- support.apple.com/en-us/HT212807 Vendor Advisory
- support.apple.com/kb/HT212824 Vendor Advisory
Questions
Is CVE-2021-30860 being exploited?
Yes. CISA added CVE-2021-30860 to its Known Exploited Vulnerabilities catalog on 2021-11-03, with a federal remediation due date of 2021-11-17.
How do I fix CVE-2021-30860?
CISA's required action: Apply updates per vendor instructions.
From NVD, CISA KEV, FIRST EPSS and OSV.dev, checked . Status on NVD: Analyzed. The description is NVD's text, quoted as published.
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