Buffer overflow in Juniper Junos OS



Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2023-22399
CWE-ID CWE-120
Exploitation vector 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) Buffer overflow

EUVDB-ID: #VU82475

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/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-2023-22399

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

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

When sFlow is enabled and it monitors a packet forwarded via ECMP, a buffer management vulnerability in the dcpfe process of Juniper Networks Junos OS on QFX10K Series systems allows an attacker to cause the Packet Forwarding Engine (PFE) to crash and restart by sending specific genuine packets to the device, resulting in a Denial of Service (DoS) condition.

 The dcpfe process tries to copy more data into a smaller buffer, which overflows and corrupts the buffer, causing a crash of the dcpfe process.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Juniper Junos OS: 19.4R1-S1 - 22.2R1

CPE2.3 External links

https://supportportal.juniper.net/s/article/2023-01-Security-Bulletin-Junos-OS-QFX10K-Series-PFE-crash-upon-receipt-of-specific-genuine-packets-when-sFlow-is-enabled-CVE-2023-22399


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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