Heap-based buffer overflow in Webroot BrightCloud SDK - CVE-2018-4012
Published: December 26, 2018
Vulnerability identifier: #VU16714
CSH Severity: High
CVSS v4: 9.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2018-4012
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK due to heap-based buffer overflow when the function bc_http_read_headerincorrectly handles overlong headers. A remote attacker can use man-in-the-middle techniques to impersonate a remote BrightCloud server, trigger memory corruption and execute arbitrary code with elevated privileges.
Successful exploitation of the vulnerability may result in system compromise.
Affected software
Webroot BrightCloud SDK
How to mitigate CVE-2018-4012
Install update from vendor's website.