Phpseclib needs guardrails on large binaryfield integers
### Impact Anyone loading untrusted ASN1 files (eg. X509 certificates, RSA PKCS8 private or public keys, etc) ### Patches https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f ### Workarounds No. ### References https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77f https://www.usenix.org/system/files/usenixsecurity25-shi-bing.pdf
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2023-49316US | high7.5 | — | ||
In Math/BinaryField.php in phpseclib 3 before 3.0.34, excessively large degrees can lead to a denial of service. | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/FriendsOfPHP/security-advisories/blob/master/phpseclib/phpseclib/CVE-2023-49316.yamlWEB
- https://github.com/phpseclib/phpseclibPACKAGE
- https://github.com/phpseclib/phpseclib/commit/964d78101a70305df33f442f5490f0adb3b7e77fWEB
- https://github.com/phpseclib/phpseclib/releases/tag/3.0.34WEB
- https://github.com/phpseclib/phpseclib/security/advisories/GHSA-2f25-pfq3-c7h8WEB
- https://nvd.nist.gov/vuln/detail/CVE-2023-49316ADVISORY
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