CVE-2023-3782 Denial of service in squareup:okhttp-brotli
An attacker can cause a denial of service in OkHttp clients using BrotliInterceptor by serving malicious compressed data or via Man-in-the-Middle attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-3782?
CVE-2023-3782 is a medium-severity denial of service vulnerability in squareup:okhttp-brotli, published on 19 Jul 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
DoS of the OkHttp client when using a BrotliInterceptor and surfing to a malicious web server, or when an attacker can perform MitM to inject a Brotli zip-bomb into an HTTP response
Weakness: CWE-400
Which versions are affected by CVE-2023-3782?
It affects 1 product.
Products include Squareup Okhttp-Brotli.
How do I fix CVE-2023-3782?
Upgrade to a fixed version.
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-2023-3782 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-3782 exists.
Sources
Also known as CLSA-2026-1787931895, GHSA-w28c-cgxf-w8gv.