Memory leak in Junos OS RE when handling IPv6 packets



Published: 2020-01-03 | Updated: 2023-10-26
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-1603
CWE-ID CWE-401
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Juniper Junos OS
Operating systems & Components / Operating system

Vendor Juniper Networks, Inc.

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Memory leak

EUVDB-ID: #VU82433

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-1603

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

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to a crash the entire system.

Specific IPv6 packets sent by clients processed by the Routing Engine (RE) are improperly handled. These IPv6 packets are designed to be blocked by the RE from egressing the RE.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 16.1 - 19.3

External links

http://supportportal.juniper.net/s/article/2020-01-Security-Bulletin-Junos-OS-Improper-handling-of-specific-IPv6-packets-sent-by-clients-eventually-kernel-crash-vmcore-the-device-CVE-2020-1603


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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