Multiple vulnerabilities in Net-snmp

Published: 2023-01-10 | Updated: 2023-05-01

Risk	Medium
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-44793 CVE-2022-44792
CWE-ID	CWE-476
Exploitation vector	Network
Public exploit	Public exploit code for vulnerability #1 is available. Public exploit code for vulnerability #2 is available.
Vulnerable software	Net-snmp Server applications / Remote management servers, RDP, SSH
Vendor	net-snmp.sourceforge.net

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) NULL pointer dereference

EUVDB-ID: #VU70879

Risk: Medium

CVSSv4.0: 7.7 [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:P/U:Green]

CVE-ID: CVE-2022-44793

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: Yes

Description

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

The vulnerability exists due to a NULL pointer dereference error within the handle_ipv6IpForwarding() function in agent/mibgroup/ip-mib/ip_scalars.c. A remote attacker can send specially crafted UDP packets to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Net-snmp: 5.4.3 rc1 - 5.9.3

CPE2.3

External links

https://github.com/net-snmp/net-snmp/issues/475
https://gist.github.com/menglong2234/d07a65b5028145c9f4e1d1db8c4c202f

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.

2) NULL pointer dereference

EUVDB-ID: #VU70878