← CVE Intelligence

CVE-2021-0236

Junos OS: A specific BGP VPNv6 flowspec message causes routing protocol daemon (rpd) process to crash with a core. PUBLISHED

Description (CNA)

Due to an improper check for unusual or exceptional conditions in Juniper Networks Junos OS and Junos OS Evolved the Routing Protocol Daemon (RPD) service, upon receipt of a specific matching BGP packet meeting a specific term in the flowspec configuration, crashes and restarts causing a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects only Multiprotocol BGP (MP-BGP) VPNv6 FlowSpec deployments. This issue affects: Juniper Networks Junos OS: 18.4 versions prior to 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; 19.1 versions prior to 19.1R2-S2, 19.1R3-S4; 19.2 versions prior to 19.2R1-S6, 19.2R3-S2; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R2-S4, 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2, 20.2R3; 20.3 versions prior to 20.3R1-S1, 20.3R2. Juniper Networks Junos OS Evolved: All versions after 18.4R1-EVO prior to 20.3R2-EVO. This issue does not affect: Juniper Networks Junos OS versions prior to 18.4R1. Juniper Networks Junos OS Evolved versions prior to 18.4R1-EVO.

Affected (CNA)

Vendor / productVersions
Juniper Networks / Junos OSunaffected unspecified before 18.4R1; affected 18.4 before 18.4R1-S8, 18.4R2-S7, 18.4R3-S7; affected 19.1 before 19.1R2-S2, 19.1R3-S4; affected 19.2 before 19.2R1-S6, 19.2R3-S2; affected 19.3 before 19.3R3-S2; affected 19.4 before 19.4R2-S4, 19.4R3-S1; affected 20.1 before 20.1R2, 20.1R3, 20.1R3-EVO; affected 20.2 before 20.2R2, 20.2R3, 20.2R3-EVO; affected 20.3 before 20.3R1-S1, 20.3R2, 20.3R2-EVO
Juniper Networks / Junos OS Evolvedunaffected unspecified before 18.4R1-EVO; affected 20.3-EVO before 20.3R2-EVO

CWE

CWE-754

References

ADP enrichment

CVE

No English description supplied.