CVE-2021-1223
Last modified
CVE-2021-1223 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of an HTTP range header. EPSS estimates a 1.98% chance of exploitation in the next 30 days.
Description
Multiple Cisco products are affected by a vulnerability in the Snort detection engine that could allow an unauthenticated, remote attacker to bypass a configured file policy for HTTP. The vulnerability is due to incorrect handling of an HTTP range header. An attacker could exploit this vulnerability by sending crafted HTTP packets through an affected device. A successful exploit could allow the attacker to bypass configured file policy for HTTP packets and deliver a malicious payload.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Secure Firewall Management Center | 2.9.14.0 |
| Cisco | Secure Firewall Management Center | 2.9.15 |
| Cisco | Secure Firewall Management Center | 2.9.16 |
| Cisco | Secure Firewall Threat Defense | < 6.7.0 |
| Cisco | Ios Xe | < 17.4.1 |
| Snort | Snort | < 2.9.17 |
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-1223?
How severe is CVE-2021-1223?
How do I fix CVE-2021-1223?
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-2021-1217Multiple vulnerabilities in the web-based management interfa…7.2
- CVE-2021-1218A vulnerability in the web management interface of Cisco Sma…5.4
- CVE-2021-1219A vulnerability in Cisco Smart Software Manager Satellite co…7.8
- CVE-2021-1220Multiple vulnerabilities in the web UI of Cisco IOS XE Softw…4.3
- CVE-2021-1221A vulnerability in the user interface of Cisco Webex Meeting…4.1
- CVE-2021-1222A vulnerability in the web-based management interface of Cis…8.1
- CVE-2021-1224Multiple Cisco products are affected by a vulnerability with…5.3
- CVE-2021-1225Multiple vulnerabilities in the web-based management interfa…9.1
- CVE-2021-1226A vulnerability in the audit logging component of Cisco Unif…6.5
- CVE-2021-1227A vulnerability in the NX-API feature of Cisco NX-OS Softwar…8.1
- CVE-2021-1228A vulnerability in the fabric infrastructure VLAN connection…6.5
- CVE-2021-1229A vulnerability in ICMP Version 6 (ICMPv6) processing in Cis…5.3
Are you affected by CVE-2021-1223?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST