MagniComp SysInfo Information Exposure [CVE-2018-7268] ====================================================== The latest version of this advisory is available at: https://sintonen.fi/advisories/magnicomp-sysinfo-information-exposure.txt Overview -------- MagniComp SysInfo contains a information exposure vulnerability through debug functionality. Description ----------- Due to a combination of setuid binary and verbose debugging, MagniComp SysInfo can be used to read any file on the system owned by root (uid 0). Impact ------ A local unprivileged user is able to read any root (uid 0) owned file on the system, regardless of the file permissions. Confidential information such as password hashes (/etc/shadow) or other secrets (such as log files, private keys) can be leaked to the attacker. The vulnerability has a confidentiality impact, but has no direct impact on system integrity or availability. Details ------- [Full details of the vulnerability will be released on 2018.06.18.] Vulnerabilities --------------- [Full details of the vulnerability will be released on 2018.06.18.] Vulnerable versions ------------------- The following SysInfo versions are confirmed vulnerable: - Linux/Unix/Mac SysInfo versions up and including 10.0 (H80) Notably MagniComp SysInfo is bundled with the BMC BladeLogic Automation product. With BMC BladeLogic installations the tool can be found from the following location: /opt/bmc/bladelogic/RSCD/nativetool/bin Mitigation ---------- 1. Upgrade to SysInfo 10-H81 or later Similar or prior work --------------------- 1. Unrelated earlier privilege escalation vulnerability CVE-2017-6516 - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-6516 Credits ------- The vulnerability was discovered by Harry Sintonen / F-Secure Corporation. Timeline -------- 2018.02.13 discovered the vulnerability 2018.02.14 wrote a preliminary advisory 2018.02.14 contacted MagniComp at info@magnicomp.com requesting security contact 2018.02.14 sent vulnerability details to CERT-FI vulncoord 2018.02.15 sent vulnerability details to MagniComp security contact 2018.02.16 MagniComp acknowledged the vulnerability 2018.02.20 requested CVE ID from MITRE 2018.02.21 CVE-2018-7268 assigned by MITRE 2018.02.22 MagniComp released SysInfo 10-H81 fixing the vulnerability. however, due to extensive OEM bundling the embargo is extended 2018.05.18 public disclosure of the redacted advisory