CVE-2020-3204
Last modified
CVE-2020-3204 is a medium-severity vulnerability rated 6.7/10 on the CVSS scale. A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker with privileged EXEC credentials to execute arbitrary code on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient input validation of data passed to the Tcl interpreter. EPSS estimates a 0.38% chance of exploitation in the next 30 days.
Description
A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker with privileged EXEC credentials to execute arbitrary code on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient input validation of data passed to the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to cause memory corruption or execute the code with root privileges on the underlying OS of the affected device.
Metrics
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Cisco | Ios | 12.2\(6\)i1 |
| Cisco | Ios | 12.2\(33\)sre |
| Cisco | Ios | 12.2\(33\)sre0a |
| Cisco | Ios | 12.2\(33\)sre1 |
| Cisco | Ios | 12.2\(33\)sre2 |
| Cisco | Ios | 12.2\(33\)sre3 |
| Cisco | Ios | 12.2\(33\)sre4 |
| Cisco | Ios | 12.2\(33\)sre5 |
| Cisco | Ios | 12.2\(33\)sre6 |
| Cisco | Ios | 12.2\(33\)sre7 |
| Cisco | Ios | 12.2\(33\)sre7a |
| Cisco | Ios | 12.2\(33\)sre8 |
| Cisco | Ios | 12.2\(33\)sre9 |
| Cisco | Ios | 12.2\(33\)sre9a |
| Cisco | Ios | 12.2\(33\)sre10 |
| Cisco | Ios | 12.2\(33\)sre11 |
| Cisco | Ios | 12.2\(33\)sre12 |
| Cisco | Ios | 12.2\(33\)sre13 |
| Cisco | Ios | 12.2\(33\)sre14 |
| Cisco | Ios | 12.2\(33\)sre15 |
| Cisco | Ios | 12.2\(33\)sre15a |
| Cisco | Ios | 12.2\(33\)sxi |
| Cisco | Ios | 12.2\(33\)sxi1 |
| Cisco | Ios | 12.2\(33\)sxi2 |
| Cisco | Ios | 12.2\(33\)sxi2a |
| Cisco | Ios | 12.2\(33\)sxi3 |
| Cisco | Ios | 12.2\(33\)sxi3a |
| Cisco | Ios | 12.2\(33\)sxi3z |
| Cisco | Ios | 12.2\(33\)sxi4 |
| Cisco | Ios | 12.2\(33\)sxi4a |
| Cisco | Ios | 12.2\(33\)sxi5 |
| Cisco | Ios | 12.2\(33\)sxi5a |
| Cisco | Ios | 12.2\(33\)sxi6 |
| Cisco | Ios | 12.2\(33\)sxi7 |
| Cisco | Ios | 12.2\(33\)sxi8 |
| Cisco | Ios | 12.2\(33\)sxi8a |
| Cisco | Ios | 12.2\(33\)sxi9 |
| Cisco | Ios | 12.2\(33\)sxi9a |
| Cisco | Ios | 12.2\(33\)sxi10 |
| Cisco | Ios | 12.2\(33\)sxi11 |
| Cisco | Ios | 12.2\(33\)sxi12 |
| Cisco | Ios | 12.2\(33\)sxi13 |
| Cisco | Ios | 12.2\(33\)sxi14 |
| Cisco | Ios | 12.2\(33\)sxj |
| Cisco | Ios | 12.2\(33\)sxj1 |
| Cisco | Ios | 12.2\(33\)sxj2 |
| Cisco | Ios | 12.2\(33\)sxj3 |
| Cisco | Ios | 12.2\(33\)sxj4 |
| Cisco | Ios | 12.2\(33\)sxj5 |
| Cisco | Ios | 12.2\(33\)sxj6 |
Showing 50 of 1283 affected configurations. See NVD for the full list.
References
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-3204?
How severe is CVE-2020-3204?
How do I fix CVE-2020-3204?
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-2020-3197A vulnerability in the API subsystem of Cisco Meetings App c…5.3
- CVE-2020-3198Multiple vulnerabilities in Cisco IOS Software for Cisco 809…9.8
- CVE-2020-3199Multiple vulnerabilities in the Cisco IOx application enviro…8.8
- CVE-2020-3200A vulnerability in the Secure Shell (SSH) server code of Cis…7.7
- CVE-2020-3201A vulnerability in the Tool Command Language (Tcl) interpret…6
- CVE-2020-3203A vulnerability in the locally significant certificate (LSC)…8.6
- CVE-2020-3205A vulnerability in the implementation of the inter-VM channe…8.8
- CVE-2020-3206A vulnerability in the handling of IEEE 802.11w Protected Ma…4.7
- CVE-2020-3207A vulnerability in the processing of boot options of specifi…6.7
- CVE-2020-3208A vulnerability in the image verification feature of Cisco I…6.7
- CVE-2020-3209A vulnerability in software image verification in Cisco IOS …6.8
- CVE-2020-3210A vulnerability in the CLI parsers of Cisco IOS Software for…6.7
Are you affected by CVE-2020-3204?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST