CVE-2015-7503: Infoleak
First published: Wed Nov 18 2015(Updated: )
It was found that `Zend\Crypt\PublicKey\Rsa\PublicKey` has a call to `openssl_public_encrypt()`, which uses PHP's default `$padding` argument, which specifies `OPENSSL_PKCS1_PADDING`, indicating usage of PKCS1v1.5 padding. This padding has a known vulnerability, the Bleichenbacher's chosen-ciphertext attack, that can be used to recover an RSA private key.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| composer/zendframework/zend-crypt | >=2.0.0<2.4.9>=2.5.0<2.5.2 | |
| composer/zendframework/zendframework | >=2.0.0<2.4.9 | |
| composer/zendframework/zendframework | >=2.0.0<2.4.9 | 2.4.9 |
| composer/zendframework/zend-crypt | >=2.5.0<2.5.2 | 2.5.2 |
| composer/zendframework/zend-crypt | >=2.0.0<2.4.9 | 2.4.9 |
| composer/zendframework/zendframework | >=2.5.0<2.5.2 | 2.5.2 |
| Zend Framework | =2.4.0 | |
| Zend Framework | =2.4.1 | |
| Zend Framework | =2.4.2 | |
| Zend Framework | =2.4.3 | |
| Zend Framework | =2.4.4 | |
| Zend Framework | =2.4.5 | |
| Zend Framework | =2.4.6 | |
| Zend Framework | =2.4.7 | |
| Zend Framework | =2.4.8 | |
| Zend Framework | =2.5.0 | |
| Zend Framework | =2.5.1 |
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Reference Links
- https://framework.zend.com/security/advisory/ZF2015-10
- http://framework.zend.com/security/advisory/ZF2015-10
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1289317
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1289318
- https://bugzilla.redhat.com/show_bug.cgi?id=1283137
- https://nvd.nist.gov/vuln/detail/CVE-2015-7503
- https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zend-crypt/CVE-2015-7503.yaml
- https://github.com/FriendsOfPHP/security-advisories/blob/master/zendframework/zendframework/CVE-2015-7503.yaml
- https://github.com/advisories/GHSA-pm9m-w23q-5967 (Advisory)
Frequently Asked Questions
What is the severity of CVE-2015-7503?
CVE-2015-7503 is considered a moderate security vulnerability due to the potential for Bleichenbacher's chosen-ciphertext attack.
How do I fix CVE-2015-7503?
To remediate CVE-2015-7503, update zend-crypt to version 2.4.9 or later, or zendframework to version 2.5.2 or later.
What versions are affected by CVE-2015-7503?
CVE-2015-7503 affects zend-crypt versions from 2.0.0 to 2.4.9 and zendframework versions from 2.0.0 to 2.4.9.
What components are involved in CVE-2015-7503?
CVE-2015-7503 involves the `Zend\Crypt\PublicKey\Rsa\PublicKey` and the use of the openssl_public_encrypt function.
Is CVE-2015-7503 a known issue in PHP?
Yes, CVE-2015-7503 highlights a known issue with PHP's default padding mechanism in cryptographic operations.
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