Denial of service in Junos OS ARP processing
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2021-0271 |
| CWE-ID | CWE-415 |
| Exploitation vector | Local network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Juniper Junos OS Operating systems & Components / Operating system |
| Vendor | Juniper Networks, Inc. |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Double Free
EUVDB-ID: #VU61514
Risk: Medium
CVSSv3.1: 5.7 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]
CVE-ID: CVE-2021-0271
CWE-ID:
CWE-415 - Double Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to denial of service (DoS) attack.
The vulnerability exists due to a boundary error in the software forwarding interface daemon (sfid) process. A remote attacker on the local network can send a specially crafted ARP packet to the affected device and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
The vulnerability affects Juniper Networks Junos OS on EX2200-C Series, EX3200 Series, EX3300 Series, EX4200 Series, EX4500 Series, EX4550 Series, EX6210 Series, EX8208 Series, EX8216 Series.
Vulnerable software versionsJuniper Junos OS: 12.3 - 15.1R7-S7
External linkshttp://kb.juniper.net/InfoCenter/index?page=content&id=JSA11162&cat=SIRT_1&actp=LIST
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
