CVE-2018-18531
Last modified
CVE-2018-18531 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 1.47% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Kaptcha Project | Kaptcha | 2.3.2 |
References
- https://github.com/penggle/kaptcha/issues/3Third Party Advisory
- https://github.com/penggle/kaptcha/issues/3Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2018-18531?
How severe is CVE-2018-18531?
How do I fix CVE-2018-18531?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2018
- CVE-2018-18521Divide-by-zero vulnerabilities in the function arlib_add_sym…5.5
- CVE-2018-18524Evernote 6.15 on Windows has an incorrectly repaired stored …
- CVE-2018-18527OwnTicket 2018-05-23 allows SQL Injection via the showTicket…
- CVE-2018-18529ThinkPHP 3.2.4 has SQL Injection via the count parameter bec…
- CVE-2018-1853IBM Tivoli Storage Manager (IBM Spectrum Protect 7.1 and 8.1…6.1
- CVE-2018-18530ThinkPHP 5.1.25 has SQL Injection via the count parameter be…
- CVE-2018-18535The Asusgio low-level driver in ASUS Aura Sync v1.07.22 and …
- CVE-2018-18536The GLCKIo and Asusgio low-level drivers in ASUS Aura Sync v…
- CVE-2018-18537The GLCKIo low-level driver in ASUS Aura Sync v1.07.22 and e…
- CVE-2018-18540TeaKKi 2.7 allows XSS via a crafted onerror attribute for a …
- CVE-2018-18541In Teeworlds before 0.6.5, connection packets could be forge…
- CVE-2018-18544There is a memory leak in the function WriteMSLImage of code…
Are you affected by CVE-2018-18531?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST
