CVE-2017-2491 Use after free in n/a
Remote attackers can execute arbitrary code via crafted web pages or files due to a use-after-free flaw in Safari's JavaScriptCore engine.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2017-2491?
CVE-2017-2491 is a high-severity use after free vulnerability in Apple Iphone Os, published on 27 Jun 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Use after free vulnerability in the String.replace method JavaScriptCore in Apple Safari in iOS before 10.3 allows remote attackers to execute arbitrary code via a crafted web page, or a crafted file.
Weakness: CWE-416
Which versions are affected by CVE-2017-2491?
It affects 1 product.
Products include Apple Iphone Os.
How do I fix CVE-2017-2491?
No fix has been published for CVE-2017-2491 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.
Is CVE-2017-2491 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2017-2491 exists.
Public exploit code: 1 Exploit-DB entry.
Other vulnerabilities in Apple Iphone Os
Sources
Also known as GHSA-v5gq-732w-q78g.