Denial of service in Western Digital My Cloud OS 5
| Risk | Medium |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2020-21913 |
| CWE-ID | CWE-416 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software |
WD Cloud Hardware solutions / Other hardware appliances My Cloud EX2100 Hardware solutions / Other hardware appliances My Cloud DL4100 Hardware solutions / Other hardware appliances My Cloud DL2100 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 EX2 Ultra Hardware solutions / Other hardware appliances My Cloud PR4100 Hardware solutions / Other hardware appliances My Cloud PR2100 Hardware solutions / Other hardware appliances My Cloud Hardware solutions / Office equipment, IP-phones, print servers My Cloud OS 5 Operating systems & Components / Operating system |
| Vendor | Western Digital |
Security Bulletin
This security bulletin contains one medium risk vulnerability.
1) Use-after-free
EUVDB-ID: #VU58432
Risk: Medium
CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]
CVE-ID: CVE-2020-21913
CWE-ID:
CWE-416 - Use After Free
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a use-after-free error within the pkg_createWithAssemblyCode() function in the file tools/pkgdata/pkgdata.cpp. A remote attacker can trick the victim to open a specially crafted file and perform a denial of service (DoS) attack.
Install update from vendor's website.
Vulnerable software versionsWD Cloud: All versions
My Cloud: All versions
My Cloud EX2100: All versions
My Cloud DL4100: All versions
My Cloud DL2100: All versions
My Cloud Mirror Gen 2: All versions
My Cloud EX4100: All versions
My Cloud EX2 Ultra: All versions
My Cloud PR4100: All versions
My Cloud PR2100: All versions
My Cloud OS 5: before 5.19.117
CPE2.3- cpe:2.3:h:western_digital:wd_cloud:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_ex2100:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_dl4100:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_dl2100:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_mirror_gen_2:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_ex4100:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_ex2_ultra:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_pr4100:*:*:*:*:*:*:*:*
- cpe:2.3:h:western_digital:my_cloud_pr2100:*:*:*:*:*:*:*:*
- cpe:2.3:o:western_digital:my_cloud_os_5:*:*:*:*:*:*:*:*
https:
https://www.westerndigital.com/support/product-security/wdc-22002-my-cloud-os5-firmware-5-19-117
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.
