GHSA-6hcf-g6gr-hhcr `openssl` `X509Extension::new` and `X509Extension::new_nid` null pointer dereference

Not scored Published

A null pointer dereference in the Rust OpenSSL bindings causes a crash when specific extension types are used with a missing context.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is GHSA-6hcf-g6gr-hhcr?

GHSA-6hcf-g6gr-hhcr is a vulnerability in openssl, published on 24 Mar 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

These functions would crash when the context argument was None with certain extension types.

Thanks to David Benjamin (Google) for reporting this issue.

Which versions are affected by GHSA-6hcf-g6gr-hhcr?

3 open source packages ship an affected version, including openssl.

PackageAffectedFixed in
openssl crates.ioFrom 0.0.0-00.10.48
openssl crates.ioFrom 0.9.70.10.48
openssl crates.ioFrom 0.9.70.10.48

How do I fix GHSA-6hcf-g6gr-hhcr?

Upgrade openssl to 0.10.48 or later.

Is GHSA-6hcf-g6gr-hhcr being exploited?

There is no known exploitation of GHSA-6hcf-g6gr-hhcr in the wild and no public exploit code.

Sources

Also known as RUSTSEC-2023-0024.

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