CVE-2021-30130
HIGHCVSS 7.5/10EPSS 1.08%
Last modified
CVE-2021-30130 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.. EPSS estimates a 1.08% chance of exploitation in the next 30 days.
Description
phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Phpseclib | Phpseclib | < 2.0.31 |
| Phpseclib | Phpseclib | >= 3.0, < 3.0.7 |
| Debian | Debian Linux | 10.0 |
References
- https://github.com/phpseclib/phpseclib/pull/1635Patch, Third Party Advisory
- https://github.com/phpseclib/phpseclib/releases/tag/2.0.31Release Notes, Third Party Advisory
- https://github.com/phpseclib/phpseclib/releases/tag/3.0.7Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00024.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00025.htmlMailing List, Third Party Advisory
- https://github.com/phpseclib/phpseclib/pull/1635Patch, Third Party Advisory
- https://github.com/phpseclib/phpseclib/releases/tag/2.0.31Release Notes, Third Party Advisory
- https://github.com/phpseclib/phpseclib/releases/tag/3.0.7Release Notes, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00024.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2022/11/msg00025.htmlMailing List, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-30130?
phpseclib before 2.0.31 and 3.x before 3.0.7 mishandles RSA PKCS#1 v1.5 signature verification.
How severe is CVE-2021-30130?
CVE-2021-30130 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 1.08% probability of exploitation in the next 30 days.
How do I fix CVE-2021-30130?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- Same Subject, Wrong User: A Cross-Issuer Account Takeover in n8nStrix found an identity-binding bug in n8n's token-exchange flow enabling account takeover.
- 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.
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Are you affected by CVE-2021-30130?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST