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CVE-2021-24036 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:9.8 CRITICALVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/facebook/folly/commit/4f304af1411e68851bdd00ef6140e9de4616f7d3 CVEPatchThird Party Advisory
https://hhvm.com/blog/2021/07/20/security-update.html CVEProductVendor Advisory
https://www.facebook.com/security/advisories/cve-2021-24036 CVEVendor Advisory
https://github.com/facebook/folly/commit/4f304af1411e68851bdd00ef6140e9de4616f7d3 [email protected]PatchThird Party Advisory
https://hhvm.com/blog/2021/07/20/security-update.html [email protected]ProductVendor Advisory

see all 6 references

Weakness Enumeration

CWE-IDCWE NameSource
CWE-190Integer Overflow or Wraparound[email protected]
CWE-122Heap-based Buffer Overflow[email protected]

Affected Products

ProductVersions
facebook folly
< 2021.07.22.00

CPE

  • cpe:2.3:a:facebook:folly:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.
facebook hhvm
< 4.80.5
>= 4.81.0, <= 4.102.1
>= 4.103.0, <= 4.113.0
4.114.0
4.115.0

CPE

  • cpe:2.3:a:facebook:hhvm:*:*:*:*:*:*:*:*
  • cpe:2.3:a:facebook:hhvm:4.114.0:*:*:*:*:*:*:*
  • cpe:2.3:a:facebook:hhvm:4.115.0:*:*:*:*:*:*:*
  • cpe:2.3:a:facebook:hhvm:4.116.0:*:*:*:*:*:*:*
  • cpe:2.3:a:facebook:hhvm:4.117.0:*:*:*:*:*:*:*
  • cpe:2.3:a:facebook:hhvm:4.118.0:*:*:*:*:*:*:*
  • cpe:2.3:a:facebook:hhvm:4.118.1:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

5 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2021-24036
NVD Published Date:
Jul 23, 2021
NVD Last Modified:
Jun 17, 2026
Source:
[email protected]
CVE-2021-24036 Details - Not Deferred