CVE-2023-21243

Severity: medium (CVSS 5.5 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2023-07-13 · updated 2026-06-17
Weakness: CWE-120

Description

In validateForCommonR1andR2 of PasspointConfiguration.java, there is a possible way to inflate the size of a config file with no limits due to a buffer overflow. This could lead to local denial of service with no additional execution privileges needed. User interaction is needed for exploitation.

Affected products

Android: 11.0, 12.0, 12.1, 13.0

References

https://android.googlesource.com/platform/packages/modules/Wifi/+/5b49b8711efaadadf5052ba85288860c2d7ca7a6
https://source.android.com/security/bulletin/2023-07-01
https://android.googlesource.com/platform/packages/modules/Wifi/+/5b49b8711efaadadf5052ba85288860c2d7ca7a6
https://source.android.com/security/bulletin/2023-07-01

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