Quantum Secular Labs / Blog / Advisories

CVE-2018-9583: Google Android: Buffer overflow

CVE-2018-9583 is rated critical with a CVSS v3.0 base score of 9.8 and affects Google Android. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.

Vulnerability description

In bta_ag_parse_cmer of bta_ag_cmd.cc in Android-7.0, Android-7.1.1, Android-7.1.2, Android-8.0, Android-8.1 and Android-9, there is a possible out-of-bounds write due to a missing bounds check. This could lead to remote code execution in the bluetooth server with no additional execution privileges needed. User interaction is not needed for exploitation. Android ID: A-112860487.

Severity breakdown

CVSS v3.0 9.8: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

  • Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
  • Attack complexity: Low. No special conditions; the attack can be repeated reliably.
  • Privileges required: None. No account or prior access is needed.
  • User interaction: None. No action from any user is needed.
  • Scope: Unchanged. Impact stays within the vulnerable component.
  • Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
  • Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
  • Availability impact: High. Total loss of availability; the component can be shut down.

Underlying weakness

CWE-787: Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

Affected products

  • Google Android: 7.0; 7.1.1; 7.1.2; 8.0; 8.1; 9.0

References