An out-of-bounds read was addressed with improved input validation.
Affects Safari before 17.1, macOS before 14.1, and iOS and iPadOS before 17.1 when processing web content. Fixed in Safari 17.1, macOS 14.1, and iOS and iPadOS 17.1.2.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 17.1, 14.1
- 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 iOS, iPadOS, macOS Sonoma, and Safari are affected. Processing specially crafted web content could allow an attacker to read sensitive information from memory.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
An out-of-bounds read was addressed with improved input validation. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.
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 Safari
From unspecified · fixed in 17.1
- Apple macOS
From unspecified · fixed in 14.1
- Apple iOS and iPadOS
From unspecified · fixed in 17.1
References 18
openwall.com
lists.fedoraproject.org
debian.org
seclists.org
security.gentoo.org
Questions about CVE-2023-42916
What does this mean?
An out-of-bounds read lets code read memory outside the bounds it should use. Apple says processing web content can disclose sensitive information, and the fix adds better input validation.Source: support.apple.com, support.apple.com
Am I affected, and how do I check?
The affected products are Safari before 17.1, macOS before 14.1, and iOS and iPadOS before 17.1, when processing web content. To check a Mac, look at the Safari version in its About menu and the macOS version in About This Mac; on iPhone or iPad, check Settings > General > About.Source: support.apple.com, support.apple.com
What should I do about it?
Update Safari to 17.1 or later, macOS to 14.1 or later, and iOS or iPadOS to 17.1.2 or later. Apple's fix list names 17.1.2 for iOS and iPadOS.Source: support.apple.com, support.apple.com
Is it being exploited?
Yes. CISA added it to its Known Exploited Vulnerabilities catalog on 2023-12-04, which means it has evidence of attacks. No public exploit code is tracked.Source: cisa.gov, cve.now feed data