OSV-2022-425 Heap-use-after-free in std::__1::__tree_node_base<void*>*& std::__1::__tree<std::__1::__value_type<std:

Not scored Published

A heap-use-after-free vulnerability in the nlohmann JSON library allows attackers to cause crashes or potentially execute arbitrary code via crafted input.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Not stated
Victim action needed
Not needed
Fix
None listed

What is OSV-2022-425?

OSV-2022-425 is an use after free vulnerability in json, published on 21 May 2022.

Official description

OSS-Fuzz report: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=47533

Crash type: Heap-use-after-free READ 1
Crash state:
std::__1::__tree_node_base&lt;void*&gt;*&amp; std::__1::__tree&lt;std::__1::__value_type&lt;std:
std::__1::pair&lt;std::__1::__tree_iterator&lt;std::__1::__value_type&lt;std::__1::basic_
nlohmann::detail::binary_reader&lt;nlohmann::basic_json&lt;std::__1::map, std::__1::ve

Which versions are affected by OSV-2022-425?

1 open source package ship an affected version, including json.

PackageAffectedFixed in
json OSS-FuzzAll versionsNone

How do I fix OSV-2022-425?

No fix has been published for OSV-2022-425 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-2022-425 being exploited?

There is no known exploitation of OSV-2022-425 in the wild and no public exploit code.

Sources

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