CVE-2017-2891
Last modified
CVE-2017-2891 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. An exploitable use-after-free vulnerability exists in the HTTP server implementation of Cesanta Mongoose 6.8. An ordinary HTTP POST request with a CGI target can cause a reuse of previously freed pointer potentially resulting in remote code execution. EPSS estimates a 2.76% chance of exploitation in the next 30 days.
Description
An exploitable use-after-free vulnerability exists in the HTTP server implementation of Cesanta Mongoose 6.8. An ordinary HTTP POST request with a CGI target can cause a reuse of previously freed pointer potentially resulting in remote code execution. An attacker needs to send this HTTP request over the network to trigger this vulnerability.
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 |
|---|---|---|
| Cesanta | Mongoose | 6.8 |
References
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0398Exploit, Technical Description, Third Party Advisory
- https://www.talosintelligence.com/vulnerability_reports/TALOS-2017-0398Exploit, Technical Description, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2017-2891?
How severe is CVE-2017-2891?
How do I fix CVE-2017-2891?
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 2017
- CVE-2017-2885An exploitable stack based buffer overflow vulnerability exi…9.8
- CVE-2017-2886A memory corruption vulnerability exists in the .PSD parsing…7.8
- CVE-2017-2887An exploitable buffer overflow vulnerability exists in the X…8.8
- CVE-2017-2888An exploitable integer overflow vulnerability exists when cr…8.8
- CVE-2017-2889An exploitable Denial of Service vulnerability exists in the…7.5
- CVE-2017-2890An exploitable vulnerability exists in the /api/CONFIG/resto…8.8
- CVE-2017-2892An exploitable arbitrary memory read vulnerability exists in…9.8
- CVE-2017-2893An exploitable NULL pointer dereference vulnerability exists…7.5
- CVE-2017-2894An exploitable stack buffer overflow vulnerability exists in…9.8
- CVE-2017-2895An exploitable arbitrary memory read vulnerability exists in…8.2
- CVE-2017-2896An exploitable out-of-bounds write vulnerability exists in t…7.8
- CVE-2017-2897An exploitable out-of-bounds write vulnerability exists in t…7.8
Are you affected by CVE-2017-2891?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
