Denial of service when processing network packets in Juniper Networks Junos OS

1) Input validation error

EUVDB-ID: #VU49558

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0222

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of certain protocol packets with invalid payloads. A remote attacker can pass specially crafted traffic to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Juniper Networks Junos OS:

• 14.1X53 versions prior to 14.1X53-D53 on EX4300, QFX3500, QFX5100, EX4600;
• 15.1 versions prior to 15.1R7-S6 on EX4300, QFX3500, QFX5100, EX4600;
• 16.1 versions prior to 16.1R7-S7 on EX4300, QFX5100, EX4600;
• 17.1 versions prior to 17.1R2-S11 on EX4300, QFX5100, EX4600;
• 17.1 versions prior to 117.1R3-S2 on EX4300;
• 17.2 versions prior to 17.2R1-S9 on EX4300;
• 17.2 versions prior to 17.2R3-S3 on EX4300, QFX5100, EX4600, QFX5110, QFX5200;
• 17.3 versions prior to 17.3R2-S5, 17.3R3-S7 on EX4300, QFX5100, EX4600, QFX5110, QFX5200;
• 17.4 versions prior to 17.4R2-S9, 17.4R3 on EX4300, QFX5100, EX4600, QFX5110, QFX5200;
• 18.1 versions prior to 18.1R3-S9 on EX4300, QFX5100, EX4600, QFX5110, QFX5200, QFX5210, EX2300, EX3400;
• 18.2 versions prior to 18.2R2-S7 on EX4300;
• 18.2 versions prior to 18.2R3-S3 on EX4300, QFX5100, EX4600, QFX5110, QFX5200, QFX5210, EX2300, EX3400;
• 18.3 versions prior to 18.3R2-S3, on EX4300;
• 18.3 versions prior to 18.3R1-S7, 18.3R3-S1 on EX4300, QFX5100, EX4600, QFX5110, QFX5200, QFX5210, QFX5120, EX4650, EX2300, EX3400;
• 18.4 versions prior to 18.4R1-S5, 18.4R2-S3, 18.4R3 on EX4300, QFX5100, EX4600, QFX5110, QFX5200, QFX5210, QFX5120, EX4650, EX2300, EX3400;
• 19.1 versions prior to 19.1R1-S4, 19.1R2-S1, 19.1R3 on EX4300, QFX5100, EX4600, QFX5110, QFX5200, QFX5210, QFX5120, EX4650, EX2300, EX3400;
• 19.2 versions prior to 19.2R1-S4, 19.2R2 on EX4300;
• 19.2 versions prior to 19.2R1-S3, 19.2R2 on QFX5100, EX4600, QFX5110, QFX5200, QFX5210, QFX5120, EX4650, EX2300, EX3400;
• 19.3 versions prior to 19.3R2-S1, 19.3R3 on EX4300;
• 19.3 versions prior to 19.3R1-S1, 19.3R2, 19.3R3 on QFX5100, EX4600, QFX5110, QFX5200, QFX5210, QFX5120, EX4650, EX2300, EX3400;

Vulnerable software versions

Juniper Junos OS: 14.1 - 19.4

External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11094&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.