CVE-2021-0292

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Summary

CVECVE-2021-0292
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-07-15 20:15:00 UTC
Updated2021-10-25 15:20:00 UTC
DescriptionAn Uncontrolled Resource Consumption vulnerability in the ARP daemon (arpd) and Network Discovery Protocol (ndp) process of Juniper Networks Junos OS Evolved allows a malicious attacker on the local network to consume memory resources, ultimately resulting in a Denial of Service (DoS) condition. Link-layer functions such as IPv4 and/or IPv6 address resolution may be impacted, leading to traffic loss. The processes do not recover on their own and must be manually restarted. Changes in memory usage can be monitored using the following shell commands (header shown for clarity): user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 59.0 0.7 *5702564* 247952 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 user@router:/var/log# ps aux | grep arpd USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 31418 49.1 1.0 *5813156* 351184 ? xxx /usr/sbin/arpd --app-name arpd -I object_select --shared-objects-mode 3 Memory usage can be monitored for the ndp process in a similar fashion: user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5614052* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje user@router:/var/log# ps aux | grep ndp USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND root 14935 0.0 0.1 *5725164* 27256 ? Ssl Jun15 0:17 /usr/sbin/ndp -I no_tab_chk,object_select --app-name ndp --shared-obje This issue affects Juniper Networks Junos OS Evolved: 19.4 versions prior to 19.4R2-S3-EVO; 20.1 versions prior to 20.1R2-S4-EVO; all versions of 20.2-EVO. This issue does not affect Juniper Networks Junos OS Evolved versions prior to 19.4R2-EVO.

Risk And Classification

Problem Types: CWE-400

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Juniper Junos Evolved 19.4 r1 All All
Operating System Juniper Junos Evolved 19.4 r2 All All
Operating System Juniper Junos Evolved 19.4 r2-s1 All All
Operating System Juniper Junos Evolved 19.4 r2-s2 All All
Operating System Juniper Junos Evolved 20.1 - All All
Operating System Juniper Junos Evolved 20.1 r1 All All
Operating System Juniper Junos Evolved 20.1 r1-s1 All All
Operating System Juniper Junos Evolved 20.1 r2 All All
Operating System Juniper Junos Evolved 20.1 r2-s1 All All
Operating System Juniper Junos Evolved 20.1 r2-s2 All All
Operating System Juniper Junos Evolved 20.1 r2-s3 All All
Operating System Juniper Junos Evolved 20.2 - All All
Operating System Juniper Junos Os Evolved 19.4 r1 All All
Operating System Juniper Junos Os Evolved 19.4 r2 All All
Operating System Juniper Junos Os Evolved 19.4 r2-s1 All All
Operating System Juniper Junos Os Evolved 19.4 r2-s2 All All
Operating System Juniper Junos Os Evolved 20.1 - All All
Operating System Juniper Junos Os Evolved 20.1 r1 All All
Operating System Juniper Junos Os Evolved 20.1 r1-s1 All All
Operating System Juniper Junos Os Evolved 20.1 r2 All All
Operating System Juniper Junos Os Evolved 20.1 r2-s1 All All
Operating System Juniper Junos Os Evolved 20.1 r2-s2 All All
Operating System Juniper Junos Os Evolved 20.1 r2-s3 All All
Operating System Juniper Junos Os Evolved 20.2 - All All

References

ReferenceSourceLinkTags
2021-07 Security Bulletin: Junos OS Evolved: Memory leak in arpd or ndp processes can lead to Denial of Service (DoS) (CVE-2021-0292) - Juniper Networks CONFIRM kb.juniper.net
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
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