CVE-2020-15256 Prototype pollution in object-path
Prototype pollution in object-path allows attackers to modify object prototypes, potentially leading to code execution or privilege escalation when specific options are enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2020-15256?
CVE-2020-15256 is a high-severity code injection vulnerability in mariocasciaro object-path, published on 19 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
A prototype pollution vulnerability has been found in `object-path` <= 0.11.4 affecting the `set()` method. The vulnerability is limited to the `includeInheritedProps` mode (if version >= 0.11.0 is used), which has to be explicitly enabled by creating a new instance of `object-path` and setting the option `includeInheritedProps: true`, or by using the default `withInheritedProps` instance. The default operating mode is not affected by the vulnerability if version >= 0.11.0 is used. Any usage of `set()` in versions < 0.11.0 is vulnerable. The issue is fixed in object-path version 0.11.5 As a workaround, don't use the `includeInheritedProps: true` options or the `withInheritedProps` instance if using a version >= 0.11.0.
Which versions are affected by CVE-2020-15256?
2 open source packages ship an affected version, including object-path. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
object-path npm | All versions | 0.11.5 |
object-path npm | All versions | 0.11.5 |
Products include Object-Path Project Object-Path.
How do I fix CVE-2020-15256?
Upgrade object-path to 0.11.5 or later.
Upgrade, and never evaluate templates, expressions or code built from user input. More about Code injection.
Is CVE-2020-15256 being exploited?
There is no known exploitation of CVE-2020-15256 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2020-15256, GHSA-cwx2-736x-mf6w, UBUNTU-CVE-2020-15256.