Improper input validation in Cisco iOS 15.3(2)t
CVE-2020-3228
A vulnerability in Security Group Tag Exchange Protocol (SXP) in Cisco IOS Software, Cisco IOS XE Software, and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the affected device to reload, resulting in a denial of service (DoS) condition. The vulnerability exists because crafted SXP packets are mishandled. An attacker could exploit this vulnerability by sending specifically crafted SXP packets to the affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.6 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (78.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 78.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: +0.000
Affected products
- Cisco iOS 15.3(2)t
- Cisco iOS — versions 15.5\(3\)m7, 15.2\(4\)ea5, 15.2\(4\)e4
- Cisco iOS Xe — versions 3.3.0se, 3.3.0xo, 3.3.1se
- Cisco Nexus 1000v
- Cisco Nexus 7000 10-Slot
- Cisco Nexus 7000 18-Slot
- Cisco Nexus 7000 4-Slot
- Cisco Nexus 7000 9-Slot
- Cisco Nx-Os — versions 5.2\(1\)sv3\(4.1b\), 5.2(1)sv3(3.15), 5.2\(1\)sv3\(3.1\)
Weakness classification (CWE)
Public proof-of-concept exploits
References
- tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sxp-68TE… (vendor-advisory, Patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2020-3228?
- CVE-2020-3228 is a high-severity vulnerability in Cisco iOS 15.3(2)t, classified under Improper Input Validation. CVSS score: 8.6/10. Published 2020-06-03.
- How severe is CVE-2020-3228?
- High severity. CVSS v3 base score is 8.6 out of 10.
- Is CVE-2020-3228 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.