Cisco IOS and IOS XE Software SNMPv3 Configuration Restriction Vulnerability
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
A vulnerability in the implementation of the Simple Network Management Protocol Version 3 (SNMPv3) feature of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, remote attacker to poll an affected device using SNMP, even if the device is configured to deny SNMP traffic from an unauthorized source or the SNMPv3 username is removed from the configuration. This vulnerability exists because of the way that the SNMPv3 configuration is stored in the Cisco IOS Software and Cisco IOS XE Software startup configuration. An attacker could exploit this vulnerability by polling an affected device from a source address that should have been denied. A successful exploit could allow the attacker to perform SNMP operations from a source that should be denied. Note: The attacker has no control of the SNMPv3 configuration. To exploit this vulnerability, the attacker must have valid SNMPv3 user credentials. For more information, see the section of this advisory.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Cisco Cisco IOS XE Catalyst SD-WAN
16.10.6, 16.12.3, 16.12.1, 16.12.1a, 16.12.4a, 16.12.2r, 16.12.1c, 16.10.4, 16.12.1b1, 16.10.5, 16.12.4, 16.10.3, 16.10.3a, 16.12.1b, 16.10.3b, 16.12.1d, 16.11.1s, 16.9.1, 16.11.1a, 16.11.1d, 16.9.2, 16.10.1, 16.11.1f, 16.9.4, 16.9.3, 16.10.2, 16.12.1e, 16.11.1b, 16.11.1, 16.12.5