CVE-2020-15309

low-risk
Published 2020-08-21

An issue was discovered in wolfSSL before 4.5.0, when single precision is not employed. Local attackers can conduct a cache-timing attack against public key operations. These attackers may already have obtained sensitive information if the affected system has been used for private key operations (e.g., signing with a private key).

Do I need to act?

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0.10% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.0/10 High
LOCAL / HIGH complexity

Affected Products (1)

Affected Vendors

Wolfssl

References (4)

Exploit https://arxiv.org/abs/2008.12188
Third Party Advisory https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable
Exploit https://arxiv.org/abs/2008.12188
Third Party Advisory https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable
23
/ 100
low-risk
Severity 18/34 · Moderate
Exploitability 0/34 · Minimal
Exposure 5/34 · Minimal