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FacebookCVE-2021-24040

HistorySep 10, 2021 - 10:15 p.m.

CVE-2021-24040

2021-09-1022:15:07

CWE-502

facebook

web.nvd.nist.gov

106

cve-2021-24040

yaml deserialization

remote code execution

parlai

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.4

Confidence

High

EPSS

0.115

Percentile

95.3%

JSON

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.

Affected configurations

Nvd

Node

facebookparlaiRange<1.1.0

VendorProductVersionCPE
facebookparlai*cpe:2.3:a:facebook:parlai:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
facebook	parlai	*	cpe:2.3:a:facebook:parlai::::::::

CNA Affected

[
  {
    "product": "ParlAI",
    "vendor": "Facebook",
    "versions": [
      {
        "lessThan": "unspecified",
        "status": "unaffected",
        "version": "1.1.0",
        "versionType": "custom"
      },
      {
        "lessThan": "1.1.0",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]

References

packetstormsecurity.com/files/164136/Facebook-ParlAI-1.0.0-Code-Execution-Deserialization.html

github.com/facebookresearch/ParlAI/releases/tag/v1.1.0

github.com/facebookresearch/ParlAI/security/advisories/GHSA-m87f-9fvv-2mgg

CVSS2

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS3

9.8

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

AI Score

9.4

Confidence

High

EPSS

0.115

Percentile

95.3%

JSON

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