#VU7070 Use-after-free error in Firefox ESR - CVE-2017-7756
Published: June 14, 2017 / Updated: May 26, 2020
Vulnerability identifier: #VU7070
Vulnerability risk: High
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: CVE-2017-7756
CWE-ID: CWE-416
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Firefox ESR
Firefox ESR
Software vendor:
Mozilla
Mozilla
Description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The weakness exists due to use-after-free and use-after-scope error when logging errors from headers for XML HTTP Requests (XHR). A remote attacker can trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
The weakness exists due to use-after-free and use-after-scope error when logging errors from headers for XML HTTP Requests (XHR). A remote attacker can trigger memory corruption and execute arbitrary code with privileges of the current user.
Successful exploitation of the vulnerability may result in system compromise.
Remediation
Update to version 52.2.