CVE-2020-13396
HIGHCVSS 7.1/10EPSS 2.40%
Last modified
CVE-2020-13396 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds (OOB) read vulnerability has been detected in ntlm_read_ChallengeMessage in winpr/libwinpr/sspi/NTLM/ntlm_message.c.. EPSS estimates a 2.40% chance of exploitation in the next 30 days.
Description
An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds (OOB) read vulnerability has been detected in ntlm_read_ChallengeMessage in winpr/libwinpr/sspi/NTLM/ntlm_message.c.
Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 2.1.1 |
| Canonical | Ubuntu Linux | 16.04 |
| Canonical | Ubuntu Linux | 18.04 |
| Canonical | Ubuntu Linux | 19.10 |
| Canonical | Ubuntu Linux | 20.04 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Opensuse | Leap | 15.1 |
References
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlThird Party Advisory
- https://github.com/FreeRDP/FreeRDP/commit/48361c411e50826cb602c7aab773a8a20e1da6bcPatch, Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/compare/2.1.0...2.1.1Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00054.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/4379-1/Third Party Advisory
- https://usn.ubuntu.com/4382-1/Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-07/msg00080.htmlThird Party Advisory
- https://github.com/FreeRDP/FreeRDP/commit/48361c411e50826cb602c7aab773a8a20e1da6bcPatch, Third Party Advisory
- https://github.com/FreeRDP/FreeRDP/compare/2.1.0...2.1.1Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/08/msg00054.htmlThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2023/10/msg00008.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/4379-1/Third Party Advisory
- https://usn.ubuntu.com/4382-1/Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-13396?
An issue was discovered in FreeRDP before 2.1.1. An out-of-bounds (OOB) read vulnerability has been detected in ntlm_read_ChallengeMessage in winpr/libwinpr/sspi/NTLM/ntlm_message.c.
How severe is CVE-2020-13396?
CVE-2020-13396 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 2.40% probability of exploitation in the next 30 days.
How do I fix CVE-2020-13396?
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-2020-13396?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST