Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | N/A |
CWE-ID | CWE-264 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Steam Client/Desktop applications / Other client software |
Vendor | Valve Software |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU15779
Risk: Low
CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-264 - Permissions, Privileges, and Access Controls
Exploit availability: No
DescriptionThe vulnerability allows a remote authenticated attacker to bypass security restrictions.
The weakness exists in a Steam web API located at partner.steamgames.com/partnercdkeys/assignkeys/ due to attacker can go through all Steam games IDs, as the appid and keyid parameters were easy to guess. A remote authenticated use the /partnercdkeys/assignkeys/
endpoint on partner.steamgames.com with keycount parameter to "0", bypass the API's limitations, retrieve a file with CD keys belonging to any game and download previously-generated CD keys for a game which they would not normally have access.
Install update from vendor's website.
Vulnerable software versionsSteam: All versions
External linkshttp://hackerone.com/reports/391217
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.