Prototype pollution in object-path

CVE-2020-15256 → View on GitHub ↗ View on CVE.org ↗ View on NVD ↗

Description

Impact

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.

Patches

Upgrade to version >= 0.11.5

Workarounds

Don't use the includeInheritedProps: true options or the withInheritedProps instance if using a version >= 0.11.0.

References

Read more about the prototype pollution vulnerability

For more information

If you have any questions or comments about this advisory:
* Open an issue in object-path

Basic information

Type
reviewed
Severity
high
Advisory on GitHub
Open advisory ↗
Repository advisory
Open repository advisory ↗
Source code
Browse source ↗
Published (advisory)
2020-10-19 20:55:55 UTC
Updated
2023-11-29 22:12:39 UTC
GitHub reviewed
2020-10-19 20:52:39 UTC
NVD published
2020-10-19

EPSS Score

Score Percentile
0.16% 37.13%

CVSS Scores

Base score Version Severity Vector
7.7 3.1 —
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:H Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:H)
Even with access, the exploit needs extra luck, timing, or a fussy environment to actually work.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:H)
They could widely tamper with or forge data—trust in the data is badly hurt.
Availability (A:H)
Could take the service down hard or make it unusable for people who depend on it.

Identifiers

Type Value
GHSA GHSA-cwx2-736x-mf6w ↗
CVE CVE-2020-15256 ↗

CWEs

CWE id Name
CWE-20 Improper Input Validation
CWE-471 Modification of Assumed-Immutable Data (MAID)

Credits

  • alromh87 (analyst)
  • JamieSlome (analyst)
  • Asjidkalam (analyst)
  • huntr-helper (analyst)

Affected packages (1)

Vulnerable version ranges and first patched releases as published by GitHub.

Ecosystem Package Vulnerable range First patched Vulnerable functions
npm object-path < 0.11.5 0.11.5 —

References

cvelogic Threat Intelligence