#VU51481 Link following in Hardware solutions
Vulnerability identifier: #VU51481
Vulnerability risk: High
CVSSv3.1: 8.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-59
Exploitation vector: Network
Exploit availability: Yes
Vulnerable software:
My Cloud EX2 Ultra
Hardware solutions /
Other hardware appliances
My Cloud Mirror Gen 2
Hardware solutions /
Other hardware appliances
My Cloud EX4100
Hardware solutions /
Other hardware appliances
My Cloud PR2100
Hardware solutions /
Other hardware appliances
My Cloud PR4100
Hardware solutions /
Other hardware appliances
My Cloud DL2100
Hardware solutions /
Other hardware appliances
My Cloud DL4100
Hardware solutions /
Other hardware appliances
My Cloud EX2100
Hardware solutions /
Other hardware appliances
My Cloud (P/N: WDBCTLxxxxxx-10)
Hardware solutions /
Other hardware appliances
Vendor:
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to the affected software mishandle Symbolic Link Following within the SMB and AFP services. A remote attacker can create a symlink to read arbitrary files and gain access to sensitive information or execute arbitrary code on the system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
External links
http://www.westerndigital.com/support/productsecurity/wdc-21002-my-cloud-firmware-version-5-10-122
http://www.zerodayinitiative.com/advisories/ZDI-21-277/
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. However, proof of concept for this vulnerability is available.
