CVE-2020-0479 — In callUnchecked of DocumentsProvider

In callUnchecked of DocumentsProvider.java, there is a possible permissions bypass. This could lead to local escalation of privilege allowing a malicious app to access files available to the DocumentProvider without user permission, with no additional execution privileges needed.

01What is this vulnerability?

In callUnchecked of DocumentsProvider.java, there is a possible permissions bypass. This could lead to local escalation of privilege allowing a malicious app to access files available to the DocumentProvider without user permission, with no additional execution privileges needed. User interaction is needed for exploitation.Product: AndroidVersions: Android-11Android ID: A-157294893

02Affected products

Vendor	Product	Versions
n	a / Android	Android-11

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-12-15T15:54:41.000Z
• Last modified: 2024-08-04T06:02:51.993Z

09References

• source.android.com — https://source.android.com/security/bulletin/pixel/2020-12-01