CVE-2020-8252
HIGHCVSS 7.8/10EPSS 0.71%
Last modified
CVE-2020-8252 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.. EPSS estimates a 0.71% chance of exploitation in the next 30 days.
Description
The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Nodejs | Node.Js | >= 10.0.0, < 10.22.1 |
| Nodejs | Node.Js | >= 12.0.0, < 12.18.4 |
| Nodejs | Node.Js | >= 14.0.0, < 14.9.0 |
| Opensuse | Leap | 15.2 |
| Fedoraproject | Fedora | 33 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00011.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00023.htmlMailing List, Third Party Advisory
- https://hackerone.com/reports/965914Permissions Required, Third Party Advisory
- https://security.gentoo.org/glsa/202009-15Third Party Advisory
- https://security.netapp.com/advisory/ntap-20201009-0004/Third Party Advisory
- https://usn.ubuntu.com/4548-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00011.htmlThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00023.htmlMailing List, Third Party Advisory
- https://hackerone.com/reports/965914Permissions Required, Third Party Advisory
- https://security.gentoo.org/glsa/202009-15Third Party Advisory
- https://security.netapp.com/advisory/ntap-20201009-0004/Third Party Advisory
- https://usn.ubuntu.com/4548-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-8252?
The implementation of realpath in libuv < 10.22.1, < 12.18.4, and < 14.9.0 used within Node.js incorrectly determined the buffer size which can result in a buffer overflow if the resolved path is longer than 256 bytes.
How severe is CVE-2020-8252?
CVE-2020-8252 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 0.71% probability of exploitation in the next 30 days.
How do I fix CVE-2020-8252?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
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 2020
- CVE-2020-8246Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix…7.5
- CVE-2020-8247Citrix ADC and Citrix Gateway 13.0 before 13.0-64.35, Citrix…8.8
- CVE-2020-8248A vulnerability in the Pulse Secure Desktop Client (Linux) <…7.8
- CVE-2020-8249A vulnerability in the Pulse Secure Desktop Client (Linux) <…7.8
- CVE-2020-8250A vulnerability in the Pulse Secure Desktop Client (Linux) <…7.8
- CVE-2020-8251Node.js < 14.11.0 is vulnerable to HTTP denial of service (D…7.5
- CVE-2020-8253Improper authentication in Citrix XenMobile Server 10.12 bef…7.5
- CVE-2020-8254A vulnerability in the Pulse Secure Desktop Client < 9.1R9 h…8.8
- CVE-2020-8255A vulnerability in the Pulse Connect Secure < 9.1R9 admin we…4.9
- CVE-2020-8256A vulnerability in the Pulse Connect Secure < 9.1R8.2 admin …4.9
- CVE-2020-8257Improper privilege management on services run by Citrix Gate…9.8
- CVE-2020-8258Improper privilege management on services run by Citrix Gate…7.5
Are you affected by CVE-2020-8252?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST