Buffer overflow in Webroot Brightcloud
CVE-2018-4012
An exploitable buffer overflow vulnerability exists in the HTTP header-parsing function of the Webroot BrightCloud SDK. The function bc_http_read_header incorrectly handles overlong headers, leading to arbitrary code execution. An unauthenticated attacker could impersonate a remote BrightCloud server to trigger this vulnerability.
Vulnerability class: Buffer Overflow
EPSS: 0.025 (83.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Webroot Brightcloud
- N/a Webroot — versions Webroot BrightCloud SDK
Weakness classification (CWE)
References
- talos-cna@cisco.com (Exploit, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2018-4012?
- CVE-2018-4012 is a critical-severity vulnerability in Webroot Brightcloud, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 9.0/10. Published 2019-01-03.
- How severe is CVE-2018-4012?
- Critical severity. CVSS v3 base score is 9.0 out of 10.