Improper Check for Unusual or Exceptional Conditions in Juniper Junos OS Evolved



Published: 2021-04-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-0225
CWE-ID CWE-754
Exploitation vector Network
Public exploit N/A
Vulnerable software
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Junos OS Evolved
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper Check for Unusual or Exceptional Conditions

EUVDB-ID: #VU52307

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-0225

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to the stateless IP firewall filter does not work as expected. A remote attacker can cause the stateless firewall filter configuration which uses the action "policer" in certain combinations with other options to not take effect.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Junos OS Evolved: 19.1R1-EVO

External links

http://kb.juniper.net/InfoCenter/index?page=content&id=JSA11120&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 Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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