CVE-2019-1964
published 2019-08-28CVE-2019-1964: A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the…
PriorityP342high7.5CVSS 3.0
AVNACLPRNUINSUCNINAH
EPSS
1.99%
78.5th percentile
A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device. The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An attacker could exploit this vulnerability by sending a malformed IPv6 packet through an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device.
Affected
4 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| cisco | cisco_nx-os_software_8.1 | >= unspecified < 8.4(1) | 8.4(1) |
| cisco | nx-os | — | — |
| cisco | nx-os | >= 8.1 < 8.2\(3\) | 8.2\(3\) |
| cisco | nx-os | >= 8.3 < 8.4 | 8.4 |
CVSS provenance
nvdv3.07.5HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
nvdv2.07.8HIGHAV:N/AC:L/Au:N/C:N/I:N/A:C
vendor_cisco8.6HIGH
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GHSA
GHSA-23r8-fhxm-33gj: A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart
ghsa_unreviewed·2022-05-24
CVE-2019-1964 [HIGH] CWE-20 GHSA-23r8-fhxm-33gj: A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart
A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device. The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An attacker could exploit this vulnerability by sending a malformed IPv6 packet through an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device.
Cisco
Cisco NX-OS Software IPv6 Denial of Service Vulnerability
vendor_cisco·2019-08-28·CVSS 8.6
CVE-2019-1964 [HIGH] CWE-20 Cisco NX-OS Software IPv6 Denial of Service Vulnerability
Cisco NX-OS Software IPv6 Denial of Service Vulnerability
A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device.
The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An attacker could exploit this vulnerability by sending a malformed IPv6 packet through an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device.
Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability.
This advisory is available
Cisco
Cisco NX-OS Software IPv6 Denial of Service Vulnerability
vendor_cisco·CVSS 3.0
CVE-2019-1964 Cisco NX-OS Software IPv6 Denial of Service Vulnerability
CVE-2019-1964: Cisco NX-OS Software IPv6 Denial of Service Vulnerability
A vulnerability in the IPv6 traffic processing of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause an unexpected restart of the netstack process on an affected device. The vulnerability is due to improper validation of IPv6 traffic sent through an affected device. An attacker could exploit this vulnerability by sending a malformed IPv6 packet through an affected device. A successful exploit could allow the attacker to cause a denial of service (DoS) condition while the netstack process restarts. A sustained attack could lead to a reboot of the device. Cisco has released software updates that address this vulnerability. There are no
CVSS: 3.0
CWE: CWE-20, CWE-20
Bug IDs: CSCvn46719, CSCvn46
No detection rules found.
No public exploits indexed.
Talos
Threat Source newsletter (Sept. 5, 2019)
blogs_talos·2019-09-05
Threat Source newsletter (Sept. 5, 2019)
Newsletter compiled by Jon Munshaw.
Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week.
By now, nearly everyone has heard of BlueKeep. It definitely sounds scary, with of this talk of wormable bugs and WannaCry. But so far, no attackers have used it to launch a large-scale attack.
Of course, we knew this wouldn’t stay quiet forever. Last month, Microsoft disclosed more RDP vulnerabilities in what’s being called “DejaBlue.” These are another set of wormable bugs, but we have a walkthrough for how Cisco Firepower customers can stay protected.
Elsewhere on the vulnerability front, we have advisories out for an information disclosure in Blynk-Library and two bugs in Epignosis eFront.
We also have our weekly Threat Ro
Talos
Threat Source newsletter (Sept. 5, 2019)
blogs_talos·2019-09-05
Threat Source newsletter (Sept. 5, 2019)
## Threat Source newsletter (Sept. 5, 2019)
Newsletter compiled by Jon Munshaw.
Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week.
By now, nearly everyone has heard of BlueKeep. It definitely sounds scary, with of this talk of wormable bugs and WannaCry. But so far, no attackers have used it to launch a large-scale attack.
Of course, we knew this wouldn’t stay quiet forever. Last month, Microsoft disclosed more RDP vulnerabilities in what’s being called “DejaBlue.” These are another set of wormable bugs, but we have a walkthrough for how Cisco Firepower customers can stay protected.
Elsewhere on the vulnerability front, we have advisories out for an information disclosure in Blynk-Library and two bugs in Epignos
2019-08-28
Published