CVE & CISA-KEV Catalog

CVE-2019-9949

HIGHEPSS 86th pctl
8.8
CVSS v3
NVD

Description

Western Digital My Cloud Cloud, Mirror Gen2, EX2 Ultra, EX2100, EX4100, DL2100, DL4100, PR2100 and PR4100 before firmware 2.31.183 are affected by a code execution (as root, starting from a low-privilege user session) vulnerability. The cgi-bin/webfile_mgr.cgi file allows arbitrary file write by abusing symlinks. Specifically, this occurs by uploading a tar archive that contains a symbolic link, then uploading another archive that writes a file to the link using the "cgi_untar" command. Other commands might also be susceptible. Code can be executed because the "name" parameter passed to the cgi_unzip command is not sanitized.

CWE-59Link Following

How to fix

Remediation Available
my cloud dl2100 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud dl4100 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud ex2100 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud ex2 ultra firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud ex4100 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud mirror gen2 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud pr2100 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD
my cloud pr4100 firmwareNVD
Affected:< 2.31.183Fixed in:2.31.183CVE-2019-9949derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

3.05%probability of exploitation in 30 days
86thpercentile

Elevated risk: more likely to be exploited than 86% of all known CVEs.

References

Vendor Advisory1
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.