CVE-2018-0295
No exploitation reported by the sources we read.
- Published2018-06-20
- Fixed in8.1\(2\) · 7.3\(3\)n1\(1\) · 7.0\(3\)i3 · 7.0\(3\)i7\(1\) · 7.0\(3\)i4 · 7.0\(3\)i6\(2\)
- WeaknessCWE-20
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
Description
A vulnerability in the Border Gateway Protocol (BGP) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition due to the device unexpectedly reloading. The vulnerability is due to incomplete input validation of the BGP update messages. An attacker could exploit this vulnerability by sending a crafted BGP update message to the targeted device. An exploit could allow the attacker to cause the switch to reload unexpectedly. The Cisco implementation of the BGP protocol only accepts incoming BGP traffic from explicitly defined peers. To exploit this vulnerability, an attacker must be able to send the malicious packets over a TCP connection that appears to come from a trusted BGP peer or inject malformed messages into the victim's BGP network. This would require obtaining information about the BGP peers in the affected system's trusted network. The vulnerability may be triggered when the router receives a malformed BGP message from a peer on an existing BGP session. At least one BGP neighbor session must be established for a router to be vulnerable. This vulnerability affects Nexus 2000 Series Switches, Nexus 3000 Series Switches, Nexus 3500 Platform Switches, Nexus 3600 Platform Switches, Nexus 5500 Platform Switches, Nexus 5600 Platform Switches, Nexus 6000 Series Switches, Nexus 7000 Series Switches, Nexus 7700 Series Switches, Nexus 9000 Series Fabric Switches in Application Centric Infrastructure (ACI) mode, Nexus 9000 Series Switches in standalone NX-OS mode, Nexus 9500 R-Series Line Cards and Fabric Modules. Cisco Bug IDs: CSCve79599, CSCve87784, CSCve91371, CSCve91387.
Timeline
dates in UTC- 2018-06-2021:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 21:37 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2018-0295?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2018-0295?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 8.1 | ≥ 6.2, < 8.1\(2\) | 8.1\(2\) | NVD |
| 7.3 | ≥ 6.0, < 7.3\(3\)n1\(1\) | 7.3\(3\)n1\(1\) | NVD |
| 7.0 | < 7.0\(3\)i3 | 7.0\(3\)i3 | NVD |
| 7.0 | ≥ 7.0\(3\)i4, < 7.0\(3\)i7\(1\) | 7.0\(3\)i7\(1\) | NVD |
| 7.0 | < 7.0\(3\)i4 | 7.0\(3\)i4 | NVD |
| 7.0 | ≥ 7.0\(3\)i5, < 7.0\(3\)i6\(2\) | 7.0\(3\)i6\(2\) | NVD |
| 7.0 | = 7.0\(3\)i7 | no fix published | NVD |
| 7.0 | = 7.0 | no fix published | NVD |
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Fix
- Update Cisco nx-os to 8.1\(2\) · 7.3\(3\)n1\(1\) · 7.0\(3\)i3 · 7.0\(3\)i7\(1\) · 7.0\(3\)i4 · 7.0\(3\)i6\(2\)
Advisories and patches
- tools.cisco.comVendor Advisory
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Published
- 2018-06-20
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2018-0295?
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.