OSV-2021-1394 Use-after-poison in JS::Reference::put_value
A use-after-poison vulnerability in the JavaScript engine allows attackers to execute arbitrary code or cause denial of service via crafted scripts.
- 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 OSV-2021-1394?
OSV-2021-1394 is an use after free vulnerability in serenity, published on 29 Sep 2021. 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
OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=39379
Crash type: Use-after-poison READ 8
Crash state:
JS::Reference::put_value
JS::AssignmentExpression::execute
JS::ExpressionStatement::execute
Which versions are affected by OSV-2021-1394?
1 open source package ship an affected version, including serenity.
| Package | Affected | Fixed in |
|---|---|---|
serenity OSS-Fuzz | All versions | None |
How do I fix OSV-2021-1394?
No fix has been published for OSV-2021-1394 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 OSV-2021-1394 being exploited?
There is no known exploitation of OSV-2021-1394 in the wild and no public exploit code.