#VU61514 Double Free in Juniper Junos OS - CVE-2021-0271
Vulnerability identifier: #VU61514
Vulnerability risk: Medium
CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-415
Exploitation vector: Local network
Exploit availability: No
Vulnerable software:
Juniper Junos OS
Operating systems & Components /
Operating system
Vendor: Juniper Networks, Inc.
Description
The 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 versions
Juniper Junos OS: 12.3R12-S1, 12.3R12-S2, 12.3R12-S3, 12.3R12-S4, 12.3R12-S5, 12.3R12-S6, 12.3R12-S7, 12.3R12-S8, 12.3R12-S9, 12.3R12-S10, 12.3R12-S12, 12.3R12-S13, 12.3R12-S14, 12.3R12-S15, 12.3R12-S16, 12.3, 12.3R10, 12.3R11, 12.3R12, 15.1F2-S1, 15.1F2-S2, 15.1F2-S3, 15.1F2-S4, 15.1F2-S5, 15.1F2-S6, 15.1F2-S7, 15.1F2-S8, 15.1F2-S9, 15.1F2-S10, 15.1F2-S11, 15.1F2-S12, 15.1F2-S13, 15.1F2-S14, 15.1F2-S15, 15.1F2-S16, 15.1F2-S17, 15.1F2-S18, 15.1F2-S19, 15.1F2-S20, 15.1R4-S2, 15.1F4-S2, 15.1R4-S1, 15.1R4-S3, 15.1R4-S4, 15.1R4-S5, 15.1F4-S1-J1, 15.1R4-S6, 15.1R4-S7, 15.1R4-S8, 15.1R4-S9, 15.1R5-S51, 15.1F5-S1, 15.1F5-S2, 15.1F5-S3, 15.1R5-S4, 15.1R5-S5, 15.1R5-S7, 15.1F5-S4, 15.1R5-S52, 15.1R5-S53, 15.1R5-S54, 15.1R5-S55, 15.1R5-S56, 15.1F5-S5, 15.1R5-S57, 15.1R6-S1, 15.1R6-S2, 15.1R6-S3, 15.1R6-S4, 15.1R6-S5, 15.1R6-S6, 15.1F6-S1, 15.1F6-S2, 15.1F6-S3, 15.1F6-S4, 15.1F6-S5, 15.1F6-S6, 15.1F6-S7, 15.1F6-S8, 15.1F6-S9, 15.1F6-S10, 15.1F6-S12, 15.1F6-S13, 15.1R7-S2, 15.1R7-S3, 15.1R7-S4, 15.1R7-S5, 15.1R7-S6, 15.1R7-S7, 15.1F7-S1, 15.1F7-S2, 15.1, 15.1F1, 15.1F, 15.1R1, 15.1R2, 15.1R, 15.1F2, 15.1R3, 15.1F3, 15.1R4, 15.1F4, 15.1F5, 15.1R5, 15.1R6, 15.1F6, 15.1R7, 15.1F7
External links
https://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.
