Permissions, Privileges, and Access Controls in Steam
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 1 |
| CVE-ID | CVE-2015-7985 |
| CWE-ID | CWE-264 |
| Exploitation vector | Network |
| Public exploit | Public exploit code for vulnerability #1 is available. |
| Vulnerable software Subscribe |
Steam Client/Desktop applications / Other client software |
| Vendor | Valve Software |
Security Bulletin
This security bulletin contains one high risk vulnerability.
1) Permissions, Privileges, and Access Controls
EUVDB-ID: #VU40589
Risk: High
CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C]
CVE-ID: CVE-2015-7985
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: Yes
DescriptionThe vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
Valve Steam 2.10.91.91 uses weak permissions (Users: read and write) for the Install folder, which allows local users to gain privileges via a Trojan horse steam.exe file.
MitigationInstall update from vendor's website.
Vulnerable software versionsSteam: 2.10.91.91
External linkshttp://packetstormsecurity.com/files/134513/Steam-2.10.91.91-Weak-File-Permissions-Privilege-Escalation.html
http://www.securityfocus.com/archive/1/536961/100/0/threaded
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.
