CVE-2020-36177

moderate-risk
Published 2021-01-06

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.

Do I need to act?

-
0.72% chance of exploitation
EPSS score — low exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
9
CVSS 9.8/10 Critical
NETWORK / LOW complexity

Affected Products (1)

Affected Vendors

Wolfssl

References (10)

Exploit https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567
Patch https://github.com/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6...
Patch https://github.com/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c...
Patch https://github.com/wolfSSL/wolfssl/pull/3426
Third Party Advisory https://github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stable
Exploit https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=26567
Patch https://github.com/wolfSSL/wolfssl/commit/63bf5dc56ccbfc12a73b06327361687091a4c6...
Patch https://github.com/wolfSSL/wolfssl/commit/fb2288c46dd4c864b78f00a47a364b96a09a5c...
Patch https://github.com/wolfSSL/wolfssl/pull/3426
Third Party Advisory https://github.com/wolfSSL/wolfssl/releases/tag/v4.6.0-stable
39
/ 100
moderate-risk
Severity 32/34 · Critical
Exploitability 2/34 · Minimal
Exposure 5/34 · Minimal