#VU45745 Incorrect permission assignment for critical resource in net-snmp (Debian package) - CVE-2020-15862

Vulnerability identifier: #VU45745

Vulnerability risk: Medium

CVSSv4.0: 5.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-15862

CWE-ID: CWE-732

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
net-snmp (Debian package)
Operating systems & Components / Operating system package or component

Vendor: Debian

Description

The vulnerability allows a remote user to escalate privileges on the system.

The vulnerability exists due to insecure permissions set by the Net-snmp installed on Debian-based systems. A remote user can overwrite files in net-snmp directory via EXTEND MIB and execute arbitrary code on the system with root privileges.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

net-snmp (Debian package): 5.0.2a-1 - 5.8+dfsg-5

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External links
https://www.debian.org/security/2020/dsa-4746
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=965166

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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