Vulnerability identifier: #VU57439
Vulnerability risk: Medium
CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2021-31361
CWE-ID:
CWE-754
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Juniper Junos OS
Operating systems & Components /
Operating system
PTX Series
Hardware solutions /
Firmware
QFX Series
Hardware solutions /
Firmware
Vendor: Juniper Networks, Inc.
Description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to improper check for unusual or exceptional conditions. A remote attacker can send specially crafted IP packets and perform a denial of service (DoS) attack.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Juniper Junos OS: 17.3R1-S1 - 17.3R3, 17.4R1-S1 - 17.4R3, 18.1R1 - 18.1R4, 18.2R1-S3 - 18.2R3, 18.3R1-S1 - 18.3R3, 18.4R1-S1 - 18.4R3, 19.1R - 19.1R3, 19.2R1-S1 - 19.2R3, 19.3R1-S1 - 19.3R3, 19.4R1-S1 - 19.4R3, 20.1R1-S1 - 20.1R1, 20.2R1-S1 - 20.2R2-S3, 20.3R1-S2 - 20.3R1, 20.4R1-S1 - 20.4R2, 21.1R1
PTX Series: All versions
QFX Series: All versions
External links
https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11223&cat=SIRT_1&actp=LIST
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.