Vulnerability Details : CVE-2019-17180
Valve Steam Client before 2019-09-12 allows placing or appending partially controlled filesystem content, as demonstrated by file modifications on Windows in the context of NT AUTHORITY\SYSTEM. This could lead to denial of service, elevation of privilege, or unspecified other impact.
Vulnerability category: Directory traversalGain privilegeDenial of service
Products affected by CVE-2019-17180
- cpe:2.3:a:valvesoftware:steam_client:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-17180
0.19%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 57 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-17180
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.2
|
HIGH | AV:L/AC:L/Au:N/C:C/I:C/A:C |
3.9
|
10.0
|
NIST | |
|
7.8
|
HIGH | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.8
|
5.9
|
NIST |
CWE ids for CVE-2019-17180
-
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-17180
-
https://amonitoring.ru/article/steam_vuln_3/
Third Steam Windows Client vulnerability, but not 0dayExploit;Third Party Advisory
-
https://hackerone.com/reports/682774
#682774 Arbitrary file creation with semi-controlled content (leads to DoS, EoP and others) at Steam Windows ClientExploit;Third Party Advisory
-
https://habr.com/ru/company/pm/blog/469507/
Третья уязвимость Steam Windows Client, но не 0day / Блог компании Перспективный мониторинг / ХабрExploit;Third Party Advisory
-
https://hackerone.com/reports/583184
#583184 Arbitrary File Write as SYSTEM from unprivileged user
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https://store.steampowered.com/news/54236/
News - Steam Client Update ReleasedRelease Notes;Vendor Advisory
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