Cisco Nexus 3000 and 9000 Series Switches IS-IS Protocol <TBD> Denial of Service 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- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean?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 Intermediate System-to-Intermediate System (IS-IS) feature of Cisco NX-OS Software for Cisco Nexus 3000 Series Switches and Cisco Nexus 9000 Series Switches in standalone NX-OS mode could allow an unauthenticated, adjacent attacker to cause the IS-IS process to unexpectedly restart, which could cause an affected device to reload. This vulnerability is due to insufficient input validation when parsing an ingress IS-IS packet. An attacker could exploit this vulnerability by sending a crafted IS-IS packet to an affected device. A successful exploit could allow the attacker to cause the unexpected restart of the IS-IS process, which could cause the affected device to reload, resulting in a denial of service (DoS) condition. Note: The IS-IS protocol is a routing protocol. To exploit this vulnerability, an attacker must be Layer 2-adjacent to the affected device.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Cisco Cisco NX-OS Software
9.2(3), 7.0(3)I5(2), 6.0(2)A8(7a), 7.0(3)I4(5), 7.0(3)I4(6), 7.0(3)I4(3), 9.2(2v), 7.0(3)I4(7), 7.0(3)I4(1), 7.0(3)I4(8), 7.0(3)I4(2), 6.0(2)A8(11), 9.2(1), 9.2(2t), 9.2(3y), 7.0(3)I4(1t), 7.0(3)I7(6z), 9.3(2), 7.0(3)F3(3), 7.0(3)I7(3z), 7.0(3)IM7(2), 6.0(2)A8(11b), 7.0(3)I7(5a), 7.0(3)I6(1), 7.0(3)I5(3b), 9.2(4), 6.0(2)A8(10), 6.0(2)A8(2), 7.0(3)IC4(4), 7.0(3)F3(3c), and 97 more