CVE-2022-48476 Path traversal in Ktor

What is CVE-2022-48476?

CVE-2022-48476 is a high-severity path traversal vulnerability in JetBrains Ktor, published on 24 Apr 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

In JetBrains Ktor before 2.3.0 path traversal in the `resolveResource` method was possible

Weakness: CWE-22, CWE-35

Which versions are affected by CVE-2022-48476?

It affects 1 product.

Products include Jetbrains Ktor.

How do I fix CVE-2022-48476?

No fix has been published for CVE-2022-48476 yet. Limit exposure of the affected software until one is available.

Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.

Is CVE-2022-48476 being exploited?

There is no known exploitation of CVE-2022-48476 in the wild and no public exploit code.

Other vulnerabilities in JetBrains Ktor

• CVE-2019-12736 Command injection in n/a Critical 9.8
• CVE-2022-29930 SHA1 implementation in JetBrains Ktor Native 2.0.0 was returning the same value. High 8.7
• CVE-2023-45612 XML external entity in Ktor High 8.6
• CVE-2021-43203 Auth bypass in n/a High 7.5
• CVE-2023-45613 Security feature bypass in Ktor Medium 6.8

Sources

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

Also known as GHSA-pw38-42w8-qm8m.