Memory leak in Juniper Junos OS



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2021-0215
CWE-ID CWE-401
Exploitation vector Local network
Public exploit N/A
Vulnerable software
 Juniper Junos OS
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Memory leak

EUVDB-ID: #VU49549

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: CVE-2021-0215

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform DoS attack on the target system.

The vulnerability exists due memory leak in packet forwarding engine due to 802.1X authenticator port interface flaps. A remote attacker can force the application to leak memory and perform denial of service attack.

Mitigation

Install updates from vendor's website.

This issue affects Juniper Networks Junos OS:

14.1X53 versions prior to 14.1X53-D54;

15.1X49 versions prior to 15.1X49-D240 ;

15.1X53 versions prior to 15.1X53-D593;

16.1 versions prior to 16.1R7-S8;

17.2 versions prior to 17.2R3-S4;

17.3 versions prior to 17.3R3-S8;

17.4 versions prior to 17.4R2-S11, 17.4R3-S2;

18.1 versions prior to 18.1R3-S10 ;

18.2 versions prior to 18.2R2-S7, 18.2R3-S3;

18.3 versions prior to 18.3R2-S4, 18.3R3-S2;

18.4 versions prior to 18.4R1-S7, 18.4R2-S4, 18.4R3-S2;

19.1 versions prior to 19.1R1-S5, 19.1R2-S2, 19.1R3;

19.2 versions prior to 19.2R1-S5, 19.2R2;

19.3 versions prior to 19.3R2-S3, 19.3R3;

19.4 versions prior to 19.4R1-S2, 19.4R2.

This issue does not affect Juniper Networks Junos OS 12.3, 15.1.

Vulnerable software versions

Juniper Junos OS: 14.1R2-S10 - 20.1

CPE2.3 External links

https://kb.juniper.net/InfoCenter/index?page=content&id=JSA11105&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.



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