GHSA-848f-mph5-9pm9 json
Zendframework Potential Information Disclosure and Insufficient Entropy vulnerability
published 2y ago modified last yr.
- cvss
- 7.5
- version 3.1, GitHub
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- —
- no score, EPSS covers CVEs only
- public exploits
- 0
- none known
Summary
In Zend Framework, Zend_Captcha_Word (v1) and Zend\Captcha\Word (v2) generate a "word" for a CAPTCHA challenge by selecting a sequence of random letters from a character set. Prior to this advisory, the selection was performed using PHP's internal array_rand() function. This function does not generate sufficient entropy due to its usage of rand() instead of more cryptographically secure methods such as openssl_pseudo_random_bytes(). This could potentially lead to information disclosure should an attacker be able to brute force the random number generation.
Patch / fix
- packagist zendframework/zendframework1 1.12.17
Is GHSA-848f-mph5-9pm9 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| GitHub | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| packagist | zendframework/zendframework1 | >=1.12.0, <1.12.17 |
1.12.17 |
Classification
- Weakness
-
- CWE-331 Insufficient Entropy
References
Sources
- GitHub Advisory GHSA-848f-mph5-9pm9
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