Vulnerability Report

CVE-2021-24040

RCE

Title: ParlAI unsafe YAML deserialization leads to RCE

RCE

Proof Of Concept

PoC Available for CVE-2021-24040

CWE Category CWE-502
Published Date Sep 10, 2021
Modified Date Nov 21, 2024
Exploit Status Available
Score 9.8 CVSS v3.1
Exploit Probability (EPSS)
36.24%

Vulnerability Summary

CVE-2021-24040: Due to use of unsafe YAML deserialization logic, an attacker with the ability to modify local YAML configuration files could provide malicious input, resulting in remote code execution or similar risks. This issue affects ParlAI prior to v1.1.0.

Impacted Vendors

F
facebook 1

Reference Links

http://packetstormsecurity.com/files/164136/Facebook-ParlAI-1.0.0-Code-Execution-Deserialization.html https://github.com/facebookresearch/ParlAI/releases/tag/v1.1.0 https://github.com/facebookresearch/ParlAI/security/advisories/GHSA-m87f-9fvv-2mgg http://packetstormsecurity.com/files/164136/Facebook-ParlAI-1.0.0-Code-Execution-Deserialization.html https://github.com/facebookresearch/ParlAI/releases/tag/v1.1.0 https://github.com/facebookresearch/ParlAI/security/advisories/GHSA-m87f-9fvv-2mgg
CVSS v3.1
Source Entity [email protected]
Severity CRITICAL
9.8
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v2.0
Source Entity [email protected]
Severity HIGH
7.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:L/Au:N/C:P/I:P/A:P

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-24040 Exploits & PoCs (Proof Of Concept)

Exploit-DB https://www.exploit-db.com/exploits/50289
View Code
MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.