GHSA-ff7x-qrg7-qggm CVE-2020-8116
dot-prop Prototype Pollution vulnerability
- Severity
- 7.3 / 10
- High · CVSS 3.1
- Exploit chance (EPSS)
- 3.08%
- Chance of exploitation in the next 30 days. Higher than 87.68% of scored vulnerabilities.
- Known exploited
- No
- Not in CISA's catalog
- Weakness
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
- CWE-425 Direct Request ('Forced Browsing')
- CWE-471 Modification of Assumed-Immutable Data (MAID)
- Fix
4.2.1- Upgrade dot-prop to this version or later
Description
Prototype pollution vulnerability in dot-prop npm package versions before 4.2.1 and versions 5.x before 5.1.1 allows an attacker to add arbitrary properties to JavaScript language constructs such as objects.
Affected versions
npm
How to fix
Move to the fixed version or later with your package manager, update the lockfile, and run your tests. If the package only arrives through another dependency, upgrade that dependency first. If none of its releases pulls a fixed version yet, force the version with your package manager's override.
dot-prop npm → 4.2.1
- npm
npm install dot-prop@4.2.1- yarn
yarn add dot-prop@4.2.1- pnpm
pnpm add dot-prop@4.2.1
Severity breakdown
CVSS 3.1 7.3
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Attack vector
- Network
- Attack complexity
- Low
- Privileges required
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Weakness
CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
The product receives input from an upstream component that specifies attributes that are to be initialized or updated in an object, but it does not properly control modifications of attributes of the object prototype.
How to prevent it
- Implementation: By freezing the object prototype first (for example, Object.freeze(Object.prototype)), modification of the prototype becomes impossible.
- Architecture and Design: By blocking modifications of attributes that resolve to object prototype, such as proto or prototype, this weakness can be mitigated.
- Implementation: When handling untrusted objects, validating using a schema can be used.
- Implementation: By using an object without prototypes (via Object.create(null) ), adding object prototype attributes by accessing the prototype via the special attributes becomes impossible, mitigating this weakness.
- Implementation: Map can be used instead of objects in most cases. If Map methods are used instead of object attributes, it is not possible to access the object prototype or modify it.
CWE-425: Direct Request ('Forced Browsing')
The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.
How to prevent it
- Architecture and Design, Operation: Apply appropriate access control authorizations for each access to all restricted URLs, scripts or files.
- Architecture and Design: Consider using MVC based frameworks such as Struts.
CWE-471: Modification of Assumed-Immutable Data (MAID)
The product does not properly protect an assumed-immutable element from being modified by an attacker.
How to prevent it
- Architecture and Design, Operation, Implementation: When the data is stored or transmitted through untrusted sources that could modify the data, implement integrity checks to detect unauthorized modification, or store/transmit the data in a trusted location that is free from external influence.
References
Advisories
Packages
Other links
Timeline
- Published
- Last updated by the source
- Latest EPSS score
Related advisories
| Advisory | Severity | Why it's related |
|---|---|---|
| GHSA-6wvx-3r32-xmcg Forge: Prototype Pollution in forge.http cookie handling via a malicious Set-Cookie | Medium | Same weakness, CWE-1321 |
| GHSA-7648-jmwf-vw7j systeminformation has prototype pollution in `networkStats()` via the interface name | Medium | Same weakness, CWE-1321 |
| GHSA-m2m5-rw3w-cwmj ApostropheCMS: Client-side Prototype Pollution in apos.http.parseQuery leading to DOM-based XSS against authenticated users | Medium | Same weakness, CWE-1321 |
| GHSA-j5rq-xfvr-p969 ApostropheCMS: Authenticated projection-exclusion prototype-member deletion in @apostrophecms/db-connect causes process-wide denial of service | High | Same weakness, CWE-1321 |
| GHSA-97rh-rhh2-7vjv Payload: Remote Code Execution through first-register | High | Same weakness, CWE-1321 |
| GHSA-4q55-j62x-fr9h devalue: Malformed null-prototype object keys bypass __proto__ rejection via property-key coercion | Medium | Same weakness, CWE-1321 |
| GHSA-x97p-jq2g-jp4f Axios: Prototype Pollution Gadget in axios toFormData Options | High | Same weakness, CWE-1321 |
| GHSA-vh66-26gq-q6x8 Axios: Prototype pollution gadget in fetch adapter can alter outbound requests | Medium | Same weakness, CWE-1321 |
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