CVE-2021-24025
Last modified
CVE-2021-24025 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 1.66% chance of exploitation in the next 30 days.
Description
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Hhvm | < 4.56.3 | |
| Hhvm | >= 4.57.0, <= 4.80.1 | |
| Hhvm | >= 4.81.0, <= 4.93.1 | |
| Hhvm | 4.94.0 | |
| Hhvm | 4.95.0 | |
| Hhvm | 4.96.0 | |
| Hhvm | 4.97.0 | |
| Hhvm | 4.98.0 |
References
- https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44caPatch, Third Party Advisory
- https://hhvm.com/blog/2021/02/25/security-update.htmlRelease Notes, Third Party Advisory
- https://github.com/facebook/hhvm/commit/08193b7f0cd3910256e00d599f0f3eb2519c44caPatch, Third Party Advisory
- https://hhvm.com/blog/2021/02/25/security-update.htmlRelease Notes, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-24025?
How severe is CVE-2021-24025?
How do I fix CVE-2021-24025?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-2402Vulnerability in the MySQL Server product of Oracle MySQL (c…4.9
- CVE-2021-24020A missing cryptographic step in the implementation of the ha…9.8
- CVE-2021-24021An improper neutralization of input vulnerability [CWE-79] i…5.4
- CVE-2021-24022A buffer overflow vulnerability in FortiAnalyzer CLI 6.4.5 a…4.4
- CVE-2021-24023An improper input validation in FortiAI v1.4.0 and earlier m…8.8
- CVE-2021-24024A clear text storage of sensitive information into log file …6.5
- CVE-2021-24026A missing bounds check within the audio decoding pipeline fo…9.8
- CVE-2021-24027A cache configuration issue prior to WhatsApp for Android v2…7.5
- CVE-2021-24028An invalid free in Thrift's table-based serialization can ca…9.8
- CVE-2021-24029A packet of death scenario is possible in mvfst via a specia…7.5
- CVE-2021-2403Vulnerability in the Oracle WebLogic Server product of Oracl…5.3
- CVE-2021-24030The fbgames protocol handler registered as part of Facebook …9.8
Are you affected by CVE-2021-24025?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST