What’s Vulnerable › Vulnerabilities

CVE-2021-37847

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-08-02 · updated 2026-06-17

Description

crypto/digest.c in Pengutronix barebox through 2021.07.0 leaks timing information because memcmp is used during digest verification.

Affected products

• barebox: through 2021.07.0

References

• https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb
• https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe
• https://gist.github.com/gquere/816dfadbad98745090034100a8a651eb
• https://github.com/saschahauer/barebox/commit/0a9f9a7410681e55362f8311537ebc7be9ad0fbe

Get alerted when CVE-2021-37847 or the next vulnerability affects your stack