CVE-2017-1000048 Prototype Pollution Protection Bypass in qs

High 7.5 Published 13 Jul 2017 Updated 5 Aug 2024

A malicious user can crash the web framework by sending a crafted request to the vulnerable qs module, causing a denial of service.

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

What is CVE-2017-1000048?

CVE-2017-1000048 is a high-severity denial of service vulnerability in n/a, published on 13 Jul 2017. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

the web framework using ljharb's qs module older than v6.3.2, v6.2.3, v6.1.2, and v6.0.4 is vulnerable to a DoS. A malicious user can send a evil request to cause the web framework crash.

Weakness: CWE-20

Which versions are affected by CVE-2017-1000048?

8 open source packages ship an affected version, including qs. It affects 1 product.

Package	Affected	Fixed in
`qs` npm	All versions	`6.0.4`
`qs` npm	All versions	`6.0.4`
`qs` npm	From `6.1.0`	`6.1.2`
`qs` npm	From `6.1.0`	`6.1.2`
`qs` npm	From `6.2.0`	`6.2.3`
`qs` npm	From `6.2.0`	`6.2.3`

2 more packages

`qs` npm	From `6.3.0`	`6.3.2`
`qs` npm	From `6.3.0`	`6.3.2`

Linux distribution packages (2)

`rh-nodejs6-nodejs-qs` Red Hat:rhel_software_collections:2::el6	All versions	`0:6.2.3-1.el6`
`rh-nodejs6-nodejs-qs` Red Hat:rhel_software_collections:2::el7	All versions	`0:6.2.3-1.el7`

Products include Qs Project Qs.

How do I fix CVE-2017-1000048?

Upgrade qs to a fixed version for your release line: 6.0.4, 6.1.2, 6.2.3 or 6.3.2.

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-2017-1000048 being exploited?

There is no known exploitation of CVE-2017-1000048 in the wild and no public exploit code.

Sources

Also known as AZL-45075, CLSA-2026-1773188136, CLSA-2026-1784509812, CLSA-2026-1784596277, GHSA-gqgv-6jq5-jjj9, RHSA-2017:2672 and 1 more.