Vulnerability Details : CVE-2021-32794
ArchiSteamFarm is a C# application with primary purpose of idling Steam cards from multiple accounts simultaneously. Due to a bug in ASF code `POST /Api/ASF` ASF API endpoint responsible for updating global ASF config incorrectly removed `IPCPassword` from the resulting config when the caller did not specify it explicitly. Due to the above, it was possible for the user to accidentally remove `IPCPassword` security measure from his IPC interface when updating global ASF config, which exists as part of global config update functionality in ASF-ui. Removal of `IPCPassword` possesses a security risk, as unauthorized users may in result access the IPC interface after such modification. The issue is patched in ASF V5.1.2.4 and future versions. We recommend to manually verify that `IPCPassword` is specified after update, and if not, set it accordingly. In default settings, ASF is configured to allow IPC access from `localhost` only and should not affect majority of users.
Vulnerability category: BypassGain privilege
Products affected by CVE-2021-32794
- cpe:2.3:a:archisteamfarm_project:archisteamfarm:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-32794
0.58%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 78 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-32794
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.0
|
MEDIUM | AV:N/AC:M/Au:S/C:P/I:P/A:P |
6.8
|
6.4
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H |
1.6
|
5.9
|
NIST | |
|
6.8
|
MEDIUM | CVSS:3.1/AV:A/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H |
0.9
|
5.9
|
GitHub, Inc. |
CWE ids for CVE-2021-32794
-
When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.Assigned by: security-advisories@github.com (Secondary)
-
The product does not perform any authentication for functionality that requires a provable user identity or consumes a significant amount of resources.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-32794
-
https://steamcommunity.com/groups/archiasf/discussions/6/3057365873428498659/
Beware of unknown method which steal inventory through ASF IPC(on VPS) :: Archi's SC FarmExploit;Third Party Advisory
-
https://github.com/JustArchiNET/ArchiSteamFarm/security/advisories/GHSA-wxx4-66c2-vj2v
Accidental removal of IPCPassword (< 5.1.2.4) · Advisory · JustArchiNET/ArchiSteamFarm · GitHubExploit;Third Party Advisory
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https://github.com/JustArchiNET/ArchiSteamFarm/pull/2379
Fix GlobalConfig update via IPC removing IPCPassword by Abrynos · Pull Request #2379 · JustArchiNET/ArchiSteamFarm · GitHubPatch;Third Party Advisory
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