CVE-2024-37298 Potential memory exhaustion attack due to sparse slice deserialization

What is CVE-2024-37298?

CVE-2024-37298 is a high-severity denial of service vulnerability in gorilla schema, published on 1 Jul 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

gorilla/schema converts structs to and from form values. Prior to version 1.4.1 Running `schema.Decoder.Decode()` on a struct that has a field of type `[]struct{...}` opens it up to malicious attacks regarding memory allocations, taking advantage of the sparse slice functionality. Any use of `schema.Decoder.Decode()` on a struct with arrays of other structs could be vulnerable to this memory exhaustion vulnerability. Version 1.4.1 contains a patch for the issue.

Weakness: CWE-770

Which versions are affected by CVE-2024-37298?

3 open source packages ship an affected version, including github.com/gorilla/schema.

How do I fix CVE-2024-37298?

Upgrade github.com/gorilla/schema to 1.4.1 or later.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2024-37298 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-37298 exists.

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as AZL-43071, AZL-43083, AZL-43103, AZL-43146, AZL-43474, AZL-44949 and 7 more.