PT-2021-13438 · Google · Android

Published 2021-12-15 · Updated 2022-07-12 · CVE-2021-1034

Positive Technologies (AI Summary)

CVSS v3.1

3.3

Low

Base vector

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

Name of the Vulnerable Software and Affected Versions Android versions Android-12

Description The issue is related to a missing permission check in the getLine1NumberForDisplay function of PhoneInterfaceManager.java. This could allow an app to determine whether another app is installed without requiring query permissions, potentially leading to local information disclosure. No additional execution privileges are needed, and user interaction is not required for exploitation.

Recommendations For Android version Android-12, consider restricting access to the getLine1NumberForDisplay function of PhoneInterfaceManager.java to minimize the risk of exploitation. As a temporary workaround, review and adjust permission settings to limit unnecessary access to app installation information. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2021-1034

Affected Products

Android

References · 4

• https://osv.dev/vulnerability/CVE-2021-1034 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-1034 · Security Note
• https://source.android.com/security/bulletin/pixel/2021-12-01 · Vendor Advisory
• https://t.me/cvenotify/24664 · Telegram Post