CVE-2018-9989
HIGHCVSS 7.5/10EPSS 2.09%
Last modified
CVE-2018-9989 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. ARM mbed TLS before 2.1.11, before 2.7.2, and before 2.8.0 has a buffer over-read in ssl_parse_server_psk_hint() that could cause a crash on invalid input.. EPSS estimates a 2.09% chance of exploitation in the next 30 days.
Description
ARM mbed TLS before 2.1.11, before 2.7.2, and before 2.8.0 has a buffer over-read in ssl_parse_server_psk_hint() that could cause a crash on invalid input.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions | Update |
|---|---|---|---|
| Arm | Mbed Tls | < 2.1.11 | — |
| Arm | Mbed Tls | >= 2.7.0, < 2.7.2 | — |
| Trustedfirmware | Mbed Tls | 2.8.0 | Rc1 |
| Debian | Debian Linux | 8.0 | — |
| Debian | Debian Linux | 9.0 | — |
References
- https://github.com/ARMmbed/mbedtls/commit/5224a7544c95552553e2e6be0b4a789956a6464ePatch, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/commit/740b218386083dc708ce98ccc94a63a95cd5629ePatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00029.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00021.htmlMailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/releases/mbedtls-2.8.0-2.7.2-and-2.1.11-releasedRelease Notes, Vendor Advisory
- https://github.com/ARMmbed/mbedtls/commit/5224a7544c95552553e2e6be0b4a789956a6464ePatch, Third Party Advisory
- https://github.com/ARMmbed/mbedtls/commit/740b218386083dc708ce98ccc94a63a95cd5629ePatch, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/09/msg00029.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/11/msg00021.htmlMailing List, Third Party Advisory
- https://tls.mbed.org/tech-updates/releases/mbedtls-2.8.0-2.7.2-and-2.1.11-releasedRelease Notes, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-9989?
ARM mbed TLS before 2.1.11, before 2.7.2, and before 2.8.0 has a buffer over-read in ssl_parse_server_psk_hint() that could cause a crash on invalid input.
How severe is CVE-2018-9989?
CVE-2018-9989 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 2.09% probability of exploitation in the next 30 days.
How do I fix CVE-2018-9989?
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.
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Are you affected by CVE-2018-9989?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST