CVE-2020-36177
CRITICALCVSS 9.8/10EPSS 3.52%
Last modified
CVE-2020-36177 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.. EPSS estimates a 3.52% chance of exploitation in the next 30 days.
Description
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Wolfssl | Wolfssl | < 4.6.0 |
References
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567Exploit, Mailing List, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6f7Patch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c0fPatch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/pull/3426Patch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stableThird Party Advisory
- https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567Exploit, Mailing List, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6f7Patch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c0fPatch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/pull/3426Patch, Third Party Advisory
- https://github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stableThird Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-36177?
RsaPad_PSS in wolfcrypt/src/rsa.c in wolfSSL before 4.6.0 has an out-of-bounds write for certain relationships between key size and digest size.
How severe is CVE-2020-36177?
CVE-2020-36177 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.52% probability of exploitation in the next 30 days.
How do I fix CVE-2020-36177?
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.
Are you affected by CVE-2020-36177?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST