CVE-2021-24036

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    CVE-2021-24036

    Published: 23 Jul 2021Last Modified: 9 Jul 2026

    Summary:

    Details: 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://hhvm.com/blog/2021/07/20/security-update.html, https://www.facebook.com/security/advisories/cve-2021-24036, https://github.com/facebook/folly/commit/4f304af1411e68851bdd00ef6140e9de4616f7d3

    Affected packages

    Package

    Name:

    Purl:

    Affected ranges

    Type: GIT

    Events:

    Introduced- 0
    Fixed -4baba28200d7446c870e96f3cdbeb492f54625d0

    Affected versions

    v2021.07.20.00

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High
    CVE-2021-24036 | CVE-DB