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CVE detail

CVE-2020-3397

A vulnerability in the Border Gateway Protocol (BGP) Multicast VPN (MVPN) implementation of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an affected device to unexpectedly reload, resulting in a denial of service (DoS) condition. The vulnerability is due to incomplete input validation of a specific type of BGP MVPN update message. An attacker could exploit this vulnerability by sending this specific, valid BGP MVPN update message to a targeted device. A successful exploit could allow the attacker to cause one of the BGP-related routing applications to restart multiple times, leading to a system-level restart. Note: The Cisco implementation of BGP accepts incoming BGP traffic from only explicitly configured peers. To exploit this vulnerability, an attacker must send a specific BGP MVPN update message over an established TCP connection that appears to come from a trusted BGP peer. To do so, the attacker must obtain information about the BGP peers in the trusted network of the affected system.

CVSS 8.6 · HighBuzz score 17.5

Buzz score

Why this CVE is surfacing

Buzz score total 17.5

This all-time snapshot uses the same composite formula as Trending across a 30-year evidence window, rather than a current rolling window.

Buzz score components · mention 11.0 · diversity 6.5 · KEV 0.0 · OTX 0.0 · PoC 0.0
Mention score
11.0
2 evidence mentions in the snapshot
Diversity score
6.5
2 sources across 1 categories
KEV score
0.0
No KEV entry observed
OTX score
0.0
0 OTX pulses
PoC score
0.0
0 repos · best confidence N/A
Best PoC traction
0
Maximum stars on a matched PoC repo

Why it matters now

Mention timeline

Total mentions
0
within the 30d window
Peak daily
0
highest bucket

Evidence

Source links by recency

Newest mentions first
2 source links · newest first
  • Cisco addresses ten high-risk issues in NX-OS softwareSecurity Affairs

    Cisco addressed ten high-risk vulnerabilities in NX-OS software, including some issues that could lead to code execution and privilege escalation. Cisco this week released security patches to address ten high-risk vulnerabilities in NX-OS software, including some flaws that could lead to code execution and privilege escalation. The first issue, tracked as CVE-2020-3517, is a DoS […]

    newssecurityaffairs.comAug 28, 2020, 7:59 AM
  • Cisco Patches High-Severity Vulnerabilities in NX-OS SoftwareSecurityWeek

    Cisco this week released patches for ten high-risk vulnerabilities in NX-OS software, including some that could lead to code execution and privilege escalation.

    newswww.securityweek.comAug 27, 2020, 7:27 PM

Exploit code

Public exploit repository references

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0 repository references · best confidence N/A · max 0 stars
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Related records

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