JVN#40907489
"Hulu / フールー" App for Android uses a hard-coded API key for an external service
Overview
"Hulu / フールー" App for Android uses a hard-coded API key for an external service.
Products Affected
- "Hulu / フールー" App for Android version 3.0.47 or later, and prior to 3.1.2
Description
"Hulu / フールー" App for Android provided by HJ Holdings, Inc. uses a hard-coded API key for an external service (CWE-798).
Impact
The hard-coded API key may be retrieved via reverse-engineering the application binary.
Note that the application users are not directly affected by this vulnerability.
Solution
The hard-coded API key has been revoked by the developer on June 7, 2022 and this vulnerability is not exploitable now.
The developer has released "Hulu / フールー" App for Android version 3.1.2 without any API key hard-coded.
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
| Attack Vector(AV) | Physical (P) | Local (L) | Adjacent (A) | Network (N) |
|---|---|---|---|---|
| Attack Complexity(AC) | High (H) | Low (L) | ||
| Privileges Required(PR) | High (H) | Low (L) | None (N) | |
| User Interaction(UI) | Required (R) | None (N) | ||
| Scope(S) | Unchanged (U) | Changed (C) | ||
| Confidentiality Impact(C) | None (N) | Low (L) | High (H) | |
| Integrity Impact(I) | None (N) | Low (L) | High (H) | |
| Availability Impact(A) | None (N) | Low (L) | High (H) |
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) |
|---|---|---|---|
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) |
Credit
Ryo Sato of BroadBand Security, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
Other Information
| JPCERT Alert |
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| JPCERT Reports |
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| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2022-35734 |
| JVN iPedia |
JVNDB-2022-000059 |