CVE & CISA-KEV Catalog

CVE-2020-11934

MEDIUM
5.9
CVSS v3
NVD

Description

It was discovered that snapctl user-open allowed altering the $XDG_DATA_DIRS environment variable when calling the system xdg-open. OpenURL() in usersession/userd/launcher.go would alter $XDG_DATA_DIRS to append a path to a directory controlled by the calling snap. A malicious snap could exploit this to bypass intended access restrictions to control how the host system xdg-open script opens the URL and, for example, execute a script shipped with the snap without confinement. This issue did not affect Ubuntu Core systems. Fixed in snapd versions 2.45.1ubuntu0.2, 2.45.1+18.04.2 and 2.45.1+20.04.2.

CWE-668

How to fix

Remediation Available
snapdDebian
Fixed in:2.45.2-1CVE-2020-11934
Fixed in:2.45.2-1CVE-2020-11934
Fixed in:2.45.2-1CVE-2020-11934
Fixed in:2.45.2-1CVE-2020-11934
snapdUbuntu
Fixed in:2.45.1ubuntu0.2USN-4424-1
Fixed in:2.45.1+18.04.2USN-4424-1
Fixed in:2.45.1+20.04.2USN-4424-1

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 VectorLocal
Attack ComplexityLow
Privileges RequiredLow
User InteractionRequired
ScopeChanged

Impact

ConfidentialityNone
IntegrityHigh
AvailabilityNone

CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:N/I:H/A:N

Exploit Intelligence

0.36%probability of exploitation in 30 days
29thpercentile

Low risk: more likely to be exploited than 29% of all known CVEs.

References

Vendor Advisory1
Third-Party Advisory1

Related Vulnerabilities

Other CWE-668 vulnerabilities, ordered by exploit likelihood. View all

CVESeverityCVSSEPSSExploitedFix
CVE-2022-39952Critical9.8100%-Fix
CVE-2017-16597Critical9.857%--
CVE-2017-16603High8.854%--
CVE-2024-25153Critical9.842%-Fix
CVE-2017-0215Medium5.336%--
CVE-2022-25236Critical9.834%-Fix
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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.