What is the vulnerability ID for this issue?

The vulnerability ID for this issue is CVE-2021-24025.

What is the severity of CVE-2021-24025?

CVE-2021-24025 has a severity rating of critical.

How can CVE-2021-24025 be exploited?

CVE-2021-24025 can be exploited by passing a large input string to the preg_quote function, triggering an integer overflow and leading to a heap overflow.

Is there a fix available for CVE-2021-24025?

Yes, the fix for CVE-2021-24025 is included in HHVM version 4.56.3 and later.

Vulnerability/
CVE-2021-24025

critical

9.8

CWE

190 122

10/3/2021

3/8/2024

CVE-2021-24025: Integer Overflow

Q: Which software versions are affected by CVE-2021-24025?

CVE-2021-24025 affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, and all versions between 4.81.0 and 4.93.1.

First published: Wed Mar 10 2021(Updated: )

Due to incorrect string size calculations inside the preg_quote function, a large input string passed to the function can trigger an integer overflow leading to a heap overflow. This issue affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, all versions between 4.81.0 and 4.93.1, and versions 4.94.0, 4.95.0, 4.96.0, 4.97.0, 4.98.0.

Credit: cve-assign@fb.com

Affected Software	Affected Version	How to fix
Facebook HHVM	<4.56.3
Facebook HHVM	>=4.57.0<=4.80.1
Facebook HHVM	>=4.81.0<=4.93.1
Facebook HHVM	=4.94.0
Facebook HHVM	=4.95.0
Facebook HHVM	=4.96.0
Facebook HHVM	=4.97.0
Facebook HHVM	=4.98.0

Remedy

https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44ca

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Reference Links

Frequently Asked Questions

What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2021-24025.
What is the severity of CVE-2021-24025?
CVE-2021-24025 has a severity rating of critical.
Which software versions are affected by CVE-2021-24025?
CVE-2021-24025 affects HHVM versions prior to 4.56.3, all versions between 4.57.0 and 4.80.1, and all versions between 4.81.0 and 4.93.1.
How can CVE-2021-24025 be exploited?
CVE-2021-24025 can be exploited by passing a large input string to the preg_quote function, triggering an integer overflow and leading to a heap overflow.
Is there a fix available for CVE-2021-24025?
Yes, the fix for CVE-2021-24025 is included in HHVM version 4.56.3 and later.

collector/nvd-index
agent/weakness
agent/references
agent/severity
agent/author
agent/type
agent/description
agent/event
agent/remedy
agent/softwarecombine
agent/first-publish-date
agent/last-modified-date
agent/tags
collector/mitre-cve
source/MITRE
vendor/facebook
canonical/facebook hhvm
version/facebook hhvm/4.57.0
version/facebook hhvm/4.80.1
version/facebook hhvm/4.81.0
version/facebook hhvm/4.93.1
version/facebook hhvm/4.94.0
version/facebook hhvm/4.95.0
version/facebook hhvm/4.96.0
version/facebook hhvm/4.97.0
version/facebook hhvm/4.98.0

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