CVE-2020-7608

Description

Affected versions of `yargs-parser` are vulnerable to prototype pollution. Arguments are not properly sanitized, allowing an attacker to modify the prototype of `Object`, causing the addition or modification of an existing property that will exist on all objects. Parsing the argument `--foo.__proto__.bar baz'` adds a `bar` property with value `baz` to all objects. This is only exploitable if attackers have control over the arguments being passed to `yargs-parser`. ## Recommendation Upgrade to versions 13.1.2, 15.0.1, 18.1.1 or later.

How to fix CVE-2020-7608

To remediate CVE-2020-7608, upgrade the affected package to a fixed version below.

• —upgrade to 18.1.1-1 or later
• —upgrade to 13.1.2 or later

Is CVE-2020-7608 being exploited?

Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.

Affected packages (2)

• from 0, < 18.1.1-1
• >= 6.0.0, < 13.1.2

CVSS scores

References (7)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2020-7608
• ADVISORYsecurity-tracker.debian.org/tracker/CVE-2020-7608
• PATCHgithub.com/yargs/yargs-parser
• WEBgithub.com/yargs/yargs-parser/commit/1c417bd0b42b09c475ee881e36d292af4fa2cc36