(Pwn2Own) ConnMan wispr_portal_web_result wp_object Double Free Remote Code Execution Vulnerability
Vulnerability Details
This vulnerability allows network-adjacent attackers to execute arbitrary code on affected installations of ConnMan. Authentication is not required to exploit this vulnerability.
The specific flaw exists within the wispr_portal_web_result method. The issue results from the lack of validating the existence of an object prior to performing further free operations on the object. An attacker can leverage this vulnerability to execute code in the context of the ConnMan process.
This vulnerability was demonstrated on a Tesla Model 3 during Pwn2Own 2022 Vancouver competition.
Additional Details
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=72343929836de80727a27d6744c869dff045757c
https://git.kernel.org/pub/scm/network/connman/connman.git/commit/?id=416bfaff988882c553c672e5bfc2d4f648d29e8a
Disclosure Timeline
- 2022-05-25 - Vulnerability reported to vendor
- 2022-09-08 - Coordinated public release of advisory
- 2023-09-20 - Advisory Updated
Credit
David BERARD and Vincent DEHORS from @Synacktiv
