CVE-2018-18531
Quick assessment
Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
kaptcha是一款基于SimpleCaptcha的验证码生成工具。 kaptcha 2.3.2版本中的多个文件存在安全漏洞，该漏洞源于程序使用‘Random’函数（而不是‘SecureRandom’函数）创建CAPTCHA值。远程攻击者可借助暴力破解的方法利用该漏洞绕过访问限制。（多个文件包括：text/impl/DefaultTextCreator.java、text/impl/ChineseTextProducer.java和text/impl/FiveLetterFirstNameTextCrea
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I. Basic Information for CVE-2018-18531
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
text/impl/DefaultTextCreator.java, text/impl/ChineseTextProducer.java, and text/impl/FiveLetterFirstNameTextCreator.java in kaptcha 2.3.2 use the Random (rather than SecureRandom) function for generating CAPTCHA values, which makes it easier for remote attackers to bypass intended access restrictions via a brute-force approach.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
kaptcha 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
kaptcha是一款基于SimpleCaptcha的验证码生成工具。 kaptcha 2.3.2版本中的多个文件存在安全漏洞，该漏洞源于程序使用‘Random’函数（而不是‘SecureRandom’函数）创建CAPTCHA值。远程攻击者可借助暴力破解的方法利用该漏洞绕过访问限制。（多个文件包括：text/impl/DefaultTextCreator.java、text/impl/ChineseTextProducer.java和text/impl/FiveLetterFirstNameTextCrea
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
|
II. Public POCs for CVE-2018-18531
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2018-18531 (1)
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https://github.com/penggle/kaptcha/issues/3 x_refsource_MISC
Same Patch Batch · n/a · 2018-10-19 · 29 CVEs total
| CVE-2018-18398 | Xfce Thunar 安全漏洞 | |
| CVE-2017-18348 | Splunk Enterprise 安全漏洞 | |
| CVE-2018-18521 | elfutils 数字错误漏洞 | |
| CVE-2018-18520 | elfutils 缓冲区错误漏洞 | |
| CVE-2018-18527 | OwnTicket SQL注入漏洞 | |
| CVE-2018-18530 | ThinkPHP SQL注入漏洞 | |
| CVE-2018-18529 | ThinkPHP SQL注入漏洞 | |
| CVE-2018-18380 | Fastspot Bigtree 安全漏洞 | |
| CVE-2018-18438 | QEMU 数字错误漏洞 | |
| CVE-2018-18428 | TP-Link TL-SC3130 安全漏洞 | |
| CVE-2018-18420 | Zenar Content Management System 跨站请求伪造漏洞 | |
| CVE-2018-18419 | User Management 跨站脚本漏洞 | |
| CVE-2018-18417 | Ekushey Project Manager CRM 跨站脚本漏洞 | |
| CVE-2018-18416 | LANGO Codeigniter Multilingual Script 跨站脚本漏洞 | |
| CVE-2018-12666 | SV3C L-SERIES HD CAMERA 授权问题漏洞 | |
| CVE-2018-18284 | Artifex Software Ghostscript 安全漏洞 | |
| CVE-2018-18224 | Open Design Alliance Drawings SDK 缓冲区错误漏洞 | |
| CVE-2018-18223 | Open Design Alliance Drawings SDK 缓冲区错误漏洞 | |
| CVE-2018-18026 | IObit Malware Fighter 缓冲区错误漏洞 | |
| CVE-2018-12675 | SV3C L-SERIES HD CAMERA 安全漏洞 |
Showing top 20 of 29 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2018-18531
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