CVE-2021-24036

critical

Description

Passing an attacker controlled size when creating an IOBuf could cause integer overflow, leading to an out of bounds write on the heap with the possibility of remote code execution. This issue affects versions of folly prior to v2021.07.22.00. This issue affects HHVM versions prior to 4.80.5, all versions between 4.81.0 and 4.102.1, all versions between 4.103.0 and 4.113.0, and versions 4.114.0, 4.115.0, 4.116.0, 4.117.0, 4.118.0 and 4.118.1.

References

https://www.facebook.com/security/advisories/cve-2021-24036

https://hhvm.com/blog/2021/07/20/security-update.html

https://github.com/facebook/folly/commit/4f304af1411e68851bdd00ef6140e9de4616f7d3

Details

Source: Mitre, NVD

Published: 2021-07-23

Updated: 2022-10-26

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 9.8

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Severity: Critical

EPSS

EPSS: 0.02582