JVN#94816361
YoruFukurou (NightOwl) vulnerable to denial-of-service (DoS)
Overview
YoruFukurou (NightOwl) contains a denial-of-service (DoS) vulnerability.
Products Affected
- YoruFukurou (NightOwl) version 2.84 and earlier
Description
YoruFukurou (NightOwl) is a Twitter client application for OS X. YoruFukurou uses OS X API CTFramesetter to render text contents.
CTFramesetter has a problem in processing a certain emoji character sequence, which may cause YoruFukurou to crash.
This problem was verified on OS X v10.9 (Mavericks). The developer of YoruFukurou states that the problem does not exist on OS X v10.11 (El Capitan).
Impact
YoruFukurou may crash when rendering a certain emoji character sequence.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Status | Last Update | Vendor Notes |
|---|---|---|---|
| aki-null | Vulnerable | 2016/08/24 | aki-null website |
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 Ichikawa of Tokyo University of Agriculture and Technology 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-2016-4852 |
| JVN iPedia |
JVNDB-2016-000151 |