High severity · published Aug 21, 2020
CVE-2020-15309
An issue was discovered in wolfSSL before 4.5.0, when single precision is not employed
7.0
CVSS
0.3%
EPSS
No
On KEV
Description
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).
CVSS vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 27% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WO
Wolfssl · Wolfssl
before 4.5.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-15309
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-15309
Exploit
https://arxiv.org/abs/2008.12188
Third Party Advisory
https://github.com/wolfSSL/wolfssl/releases/tag/v4.5.0-stable
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