CVE-2024-45258 req may send an unintended request when a malformed URL is provided

Critical 9.8 Published Updated

An attacker can cause unintended requests via malformed URLs in the Go req package, potentially bypassing security controls.

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

What is CVE-2024-45258?

CVE-2024-45258 is a critical server-side request forgery vulnerability in n/a, published on 25 Aug 2024. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

The req package before 3.43.4 for Go may send an unintended request when a malformed URL is provided, because cleanHost in http.go intentionally uses a "garbage in, garbage out" design.

Weakness: CWE-20

Which versions are affected by CVE-2024-45258?

9 open source packages ship an affected version, including github.com/imroc/req, github.com/imroc/req/v2 and github.com/imroc/req/v3.

PackageAffectedFixed in
github.com/imroc/req GoAll versionsNone
github.com/imroc/req GoAll versions3.43.4
github.com/imroc/req GoAll versions3.43.4
github.com/imroc/req/v2 GoAll versionsNone
github.com/imroc/req/v2 GoAll versions3.43.4
github.com/imroc/req/v2 GoAll versions3.43.4
3 more packages
github.com/imroc/req/v3 GoAll versions3.43.4
github.com/imroc/req/v3 GoAll versions3.43.4
github.com/imroc/req/v3 GoAll versions3.43.4

How do I fix CVE-2024-45258?

Upgrade github.com/imroc/req to 3.43.4 or later.

Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.

Is CVE-2024-45258 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2024-45258 exists.

Sources

Also known as GHSA-cj55-gc7m-wvcq, GO-2024-3098.

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