What is CVE-2018-9523?

CVE-2018-9523 is a high-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2018-11-14.

How severe is CVE-2018-9523?

High severity. CVSS v3 base score is 7.8 out of 10.

Is CVE-2018-9523 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Google Android

CVE-2018-9523

In Parcel.writeMapInternal of Parcel.java, there is a possible parcel serialization/deserialization mismatch due to improper input validation. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android. Versions: Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9. Android ID: A-112859604

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.002 (8.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.8 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Google Android — versions 7.0, 7.1.1, 7.1.2
Google Inc. Android — versions Android-7.0 Android-7.1.1 Android-7.1.2 Android-8.0 Android-8.1 Android-9

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

PalindromeLabs/Java-Deserialization-CVEs

References

security@android.com (VDB Entry, Third Party Advisory, vdb-entry, x_refsource_BID)
security@android.com (x_refsource_CONFIRM, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-9523?: CVE-2018-9523 is a high-severity vulnerability in Google Android, classified under Improper Input Validation. CVSS score: 7.8/10. Published 2018-11-14.
How severe is CVE-2018-9523?: High severity. CVSS v3 base score is 7.8 out of 10.
Is CVE-2018-9523 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.