Document Title: =============== Intel System CU - Buffer Overflow (Denial of Service) Vulnerability References (Source): ==================== https://www.vulnerability-lab.com/get_content.php?id=2133 Security ID: INTEL-SA-00134 https://nvd.nist.gov/vuln/detail/CVE-2018-3661 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3661 Acknowledgements: https://www.intel.com/content/www/us/en/security-center/advisory/intel-sa-00134.html http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-3661 CVE-ID: ======= CVE-2018-3661 Release Date: ============= 2018-07-11 Vulnerability Laboratory ID (VL-ID): ==================================== 2133 Common Vulnerability Scoring System: ==================================== 5.5 Vulnerability Class: ==================== Buffer Overflow Current Estimated Price: ======================== 3.000€ - 4.000€ Abstract Advisory Information: ============================== The vulnerability laboratory core research team discovered a local buffer overflow vulnerability in the official Intel System CU 14.0 and 14.1. Vulnerability Disclosure Timeline: ================================== 2018-05-15: Release Date (Intel) 2018-07-11: Public Disclosure (Vulnerability Laboratory) Discovery Status: ================= Published Affected Product(s): ==================== Intel Systems Product: Intel System - CU (Utilities) 14.0 build & 14.1 build - (Intel® C620 Series Chipsets b19) Exploitation Technique: ======================= Local Severity Level: =============== Medium Authentication Type: ==================== Restricted authentication (user/moderator) - User privileges User Interaction: ================= No User Interaction Disclosure Type: ================ Bug Bounty Program Technical Details & Description: ================================ A local buffer overflow vulnerability has been discovered in the official Intel System CU 14.0 and 14.1 utilities. The vulnerability can be exploited by local attackers to overwrite active registers to compromise the process or affected computer system. Intel system configuration utilities are vulnerable to a denial of service, caused by a classic buffer overflow. By sending a specially-crafted request, a local authenticated attacker could exploit this vulnerability to cause a denial of service condition. Affected are versions of syscfg.exe before release 14.0 build 16 or for systems based on Intel® C620 Series Chipsets 14.1 build 19. Affected are Versions of selview.exe before release 14.0 build 21 or for systems based on Intel® C620 Series Chipsets before 14.0 build 11. Exploitation of the local buffer overflow vulnerability requires no user interaction and system process privileges. Successful exploitation of the buffer overflow vulnerability results in a compromise of the local system process or affected computer system. Vulnerable File(s): [+] syscfg.exe [+] selview.exe https://www.vulnerability-lab.com/resources/pictures/2133/Intel1.jpg https://www.vulnerability-lab.com/resources/pictures/2133/Intel2.jpg Security Risk: ============== The security risk of the exploitable local buffer overflow vulnerability in the utilities software is estimated as medium. Credits & Authors: ================== S.AbenMassaoud - https://www.vulnerability-lab.com/show.php?user=S.AbenMassaoud Disclaimer & Information: ========================= The information provided in this advisory is provided as it is without any warranty. Vulnerability Lab disclaims all warranties, either expressed or implied, including the warranties of merchantability and capability for a particular purpose. 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