CVE-2021-31361 — Improper Check for Unusual or Exceptional Conditions in Networks Junos OS
Severity
5.3MEDIUMNVD
EPSS
0.5%
top 35.98%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedOct 19
Latest updateMay 24
Description
An Improper Check for Unusual or Exceptional Conditions vulnerability combined with Improper Handling of Exceptional Conditions in Juniper Networks Junos OS on QFX Series and PTX Series allows an unauthenticated network based attacker to cause increased FPC CPU utilization by sending specific IP packets which are being VXLAN encapsulated leading to a partial Denial of Service (DoS). Continued receipted of these specific traffic will create a sustained Denial of Service (DoS) condition. This issu…
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:LExploitability: 3.9 | Impact: 1.4
Affected Packages2 packages
Patches
🔴Vulnerability Details
2GHSA▶
GHSA-7fwx-jjqr-3gxq: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with Improper Handling of Exceptional Conditions in Juniper Networks Ju↗2022-05-24
CVEList▶
Junos OS: QFX Series and PTX Series: FPC resource usage increases when certain packets are processed which are being VXLAN encapsulated↗2021-10-19
📋Vendor Advisories
1Juniper▶
CVE-2021-31361: An Improper Check for Unusual or Exceptional Conditions vulnerability combined with Improper Handling of Exceptional Conditions in Juniper Networks Ju↗2021-10-19