Published:2015/03/03 Last Updated:2015/03/03
JVN#93727681
BestWebSoft Captcha plugin vulnerable to CAPTCHA authentication bypass
Overview
Wordpress plugin Captcha contains a CAPTCHA authentication bypass vulnerability.
Products Affected
- Captcha V4.0.6 and earlier
Description
Captcha provided by BestWebSoft is a plugin for WordPress. Captcha contains a CAPTCHA authentication bypass vulnerability (CWE-254).
Impact
If this vulnerability is exploited, an attacker may be able to successfully login to WordPress and access an administrative interface without authentication.
Solution
Update the Software
Update to the latest version according to the information provided by the developer.
Vendor Status
| Vendor | Link |
| BestWebSoft | Captcha Changelog |
References
JPCERT/CC Addendum
Vulnerability Analysis by JPCERT/CC
Analyzed on 2015.03.03 (CVSS Base Metrics)
| Measures | Severity | Description | ||
|---|---|---|---|---|
| Access Vector(AV) | Local (L) | Adjacent Network (A) | Network (N) | A vulnerability exploitable with network access means the vulnerable software is bound to the network stack and the attacker does not require local network access or local access. Such a vulnerability is often termed "remotely exploitable". |
| Access Complexity(AC) | High (H) | Medium (M) | Low (L) | Specialized access conditions or extenuating circumstances do not exist. |
| Authentication(Au) | Multiple (M) | Single (S) | None (N) | Authentication is not required to exploit the vulnerability. |
| Confidentiality Impact(C) | None (N) | Partial (P) | Complete (C) | There is no impact to the confidentiality of the system. |
| Integrity Impact(I) | None (N) | Partial (P) | Complete (C) | Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited. |
| Availability Impact(A) | None (N) | Partial (P) | Complete (C) | There is no impact to the availability of the system. |
Base Score:5.0
Credit
Other Information
| JPCERT Alert | |
| JPCERT Reports | |
| CERT Advisory |
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| CPNI Advisory |
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| TRnotes |
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| CVE |
CVE-2014-9283 |
| JVN iPedia |
JVNDB-2015-000029 |