CVE-2020-36177

Public Exploit

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.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.85% Top 30%
Third-Party Advisory chromium.org Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6f7 third party advisory patch
https://github.com/wolfSSL/wolfssl/pull/3426 third party advisory patch
https://github.com/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c0f third party advisory patch
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567 mailing list exploit third party advisory
https://github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stable third party advisory

Frequently Asked Questions

What is the severity of CVE-2020-36177?
CVE-2020-36177 has been scored as a critical severity vulnerability.
How to fix CVE-2020-36177?
To fix CVE-2020-36177, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-36177 being actively exploited in the wild?
It is possible that CVE-2020-36177 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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