#VU58195 Path traversal in Siemens products - CVE-2021-42021
Vulnerability identifier: #VU58195
Vulnerability risk: High
CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber]
CVE-ID: CVE-2021-42021
CWE-ID:
CWE-22
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Siveillance Video DLNA Server 2019 R1
Server applications /
Other server solutions
Siveillance Video DLNA Server 2019 R2
Server applications /
Other server solutions
Siveillance Video DLNA Server 2019 R3
Server applications /
Other server solutions
Siveillance Video DLNA Server 2020 R1
Server applications /
Other server solutions
Siveillance Video DLNA Server 2020 R2
Server applications /
Other server solutions
Siveillance Video DLNA Server 2020 R3
Server applications /
Other server solutions
Siveillance Video DLNA Server 2021 R1
Server applications /
Other server solutions
Vendor: Siemens
Description
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Mitigation
Install update from vendor's website.
Vulnerable software versions
Siveillance Video DLNA Server 2019 R1: All versions
Siveillance Video DLNA Server 2019 R2: All versions
Siveillance Video DLNA Server 2019 R3: All versions
Siveillance Video DLNA Server 2020 R1: All versions
Siveillance Video DLNA Server 2020 R2: All versions
Siveillance Video DLNA Server 2020 R3: All versions
Siveillance Video DLNA Server 2021 R1: All versions
External links
https://cert-portal.siemens.com/productcert/pdf/ssa-755517.pdf
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.
