Vulnerability in Juniper Junos
CVE-2020-1646
On Juniper Networks Junos OS and Junos OS Evolved devices, processing a specific UPDATE for an EBGP peer can lead to a routing process daemon (RPD) crash and restart. This issue occurs only when the device is receiving and processing the BGP UPDATE for an EBGP peer. This issue does not occur when the device is receiving and processing the BGP UPDATE for an IBGP peer. However, the offending BGP UPDATE can originally come from an EBGP peer, propagates through the network via IBGP peers without causing crash, then it causes RPD crash when it is processed for a BGP UPDATE towards an EBGP peer. Repeated receipt and processing of the same specific BGP UPDATE can result in an extended Denial of Service (DoS) condition. This issue affects: Juniper Networks Junos OS: 17.3R3-S6, 17.4R2-S7, and 18.1R3-S7. Juniper Networks Junos OS Evolved 19.2R2-EVO and later versions, prior to 19.3R1-EVO. Other Junos OS releases are not affected.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (61.8th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 62nd percentile — 61.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Juniper Junos — versions 17.3, 17.4, 18.1
- Juniper Junos OS Evolved — versions 19.2
- Juniper Networks Junos OS — versions 17.3R3-S6, 17.4R2-S7, 18.1R3-S7
- Juniper Networks Junos OS Evolved — versions unspecified, 19.2R2-EVO
Weakness classification (CWE)
References
- kb.juniper.net/JSA11033 (Vendor Advisory)
Frequently asked questions
- What is CVE-2020-1646?
- CVE-2020-1646 is a high-severity vulnerability in Juniper Junos, classified under CWE-159. CVSS score: 7.5/10. Published 2020-07-17.
- How severe is CVE-2020-1646?
- High severity. CVSS v3 base score is 7.5 out of 10.