Auth bypass in Google Android
CVE-2021-39734
In sendMessage of OneToOneChatImpl.java (? TBD), there is a possible way to send an RCS message without permissions due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android kernelAndroid ID: A-208650395References: N/A
Vulnerability class: Broken Access Control
EPSS: 0.001 (1.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Google Android
- N/a Android — versions Android kernel
Weakness classification (CWE)
References
- security@android.com (x_refsource_MISC, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-39734?
- CVE-2021-39734 is a high-severity vulnerability in Google Android, classified under Missing Authorization. CVSS score: 7.8/10. Published 2022-03-16.
- How severe is CVE-2021-39734?
- High severity. CVSS v3 base score is 7.8 out of 10.