wolfSSL 4.3.0 mulmod ecc.c wc_ecc_mulmod_ex Timing risky encryption

Summaryinfo

A vulnerability categorized as critical has been discovered in wolfSSL 4.3.0. This affects the function wc_ecc_mulmod_ex of the file ecc.c of the component mulmod. Such manipulation as part of Timing leads to risky encryption. This vulnerability is documented as CVE-2020-11713. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in wolfSSL 4.3.0. Affected by this issue is the function wc_ecc_mulmod_ex of the file ecc.c of the component mulmod. The manipulation as part of a Timing leads to a risky encryption vulnerability. Using CWE to declare the problem leads to CWE-327. The product uses a broken or risky cryptographic algorithm or protocol. Impacted is confidentiality. CVE summarizes:

wolfSSL 4.3.0 has mulmod code in wc_ecc_mulmod_ex in ecc.c that does not properly resist timing side-channel attacks.

The weakness was released 04/12/2020. This vulnerability is handled as CVE-2020-11713 since 04/12/2020. The exploitation is known to be difficult. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Name

• wolfSSL

Version

• 4.3.0

License

• open-source

Website

• Product: https://github.com/wolfSSL/wolfssl/

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CPE 2.2info

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