CVE-2020-3509 — Observable Discrepancy in Cisco IOS XE Software

CWE-388CWE-203 — Observable DiscrepancyCWE-79 — Cross-site Scripting6 documents6 sources
Severity
8.6HIGHNVD
EPSS
1.2%
top 21.43%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Cisco IOS XE SoftwareCisco IOS XE
Timeline
PublishedSep 24
Latest updateMay 24

Description

A vulnerability in the DHCP message handler of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remote attacker to cause the supervisor to crash, which could result in a denial of service (DoS) condition. The vulnerability is due to insufficient error handling when DHCP version 4 (DHCPv4) messages are parsed. An attacker could exploit this vulnerability by sending a malicious DHCPv4 message to or through a WAN interface of an affected device. A su…

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:HExploitability: 3.9 | Impact: 4.0

Affected Packages2 packages

▶NVDcisco/ios_xe16.7\(1\)

🔴Vulnerability Details

3
GHSA
GHSA-w99f-f6h3-qccc: A vulnerability in the DHCP message handler of Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers could allow an unauthenticated, remot↗2022-05-24
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OSV
ceph vulnerabilities↗2021-11-01
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CVEList
Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers DHCP Denial of Service Vulnerability↗2020-09-24
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📋Vendor Advisories

2
Red Hat
ceph-dashboard: Cross-site scripting via token Cookie↗2021-05-13
▶
Cisco
Cisco IOS XE Software for Cisco cBR-8 Converged Broadband Routers DHCP Denial of Service Vulnerability↗2020-09-24
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CVE-2020-3509 — Observable Discrepancy in Cisco | cvebase