A memory corruption vulnerability was addressed with improved locking.
Affects Safari, macOS, and iOS and iPadOS on the listed versions and models. Fixed in Safari 17.1, macOS 14.1, and iOS and iPadOS 17.1.
- 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 maliciously crafted web content could allow an attacker to run arbitrary code on the device.
Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.
Read the original description
A memory corruption vulnerability was addressed with improved locking. 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 lead to arbitrary code execution. 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
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-2023-42917
What does this mean?
A memory corruption bug was addressed with improved locking. Processing web content may lead to arbitrary code execution.Source: support.apple.com, support.apple.com, support.apple.com
Am I affected, and how do I check?
Safari 17.1.2 on macOS Monterey and macOS Ventura, macOS Sonoma 14.1.2, and iOS 17.1.2 and iPadOS 17.1.2 on iPhone XS and later and iPad Pro 12.9-inch 2nd generation and later. Safari's version can be checked in its About Safari window, macOS's in About This Mac, and iOS and iPadOS's in Settings under General, then About.Source: support.apple.com, 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 and iPadOS to 17.1 or later.Source: support.apple.com, 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