CVE-2021-20305Not scoredCWE-327

CVE-2021-20305: Nettle Project vulnerability

Nettle Project · nettle

Fixed in 3.7.2 · Affected: Nettle Project before 3.7.2 · Exploitation: possible (1 to 10%)

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

1.7%probability of exploitation in the next 30 days

77th percentile

050100

Higher than 77% of scored CVEs

Not scored yet. The CVE record carries no CVSS score.

DescriptionCVE.org

A flaw was found in Nettle in versions before 3.7.2, where several Nettle signature verification functions (GOST DSA, EDDSA & ECDSA) result in the Elliptic Curve Cryptography point (ECC) multiply function being called with out-of-range scalers, possibly resulting in incorrect results. This flaw allows an attacker to force an invalid signature, causing an assertion failure or possible validation. The highest threat to this vulnerability is to confidentiality, integrity, as well as system availability.

Affected products1

From the CVE record. A product or version that is not listed is unknown, not unaffected.

nettlenettle 3.7.2

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Exploitation: Possible (1 to 10%). EPSS between 1% and 10%.
CISA KEV: Not listed
Public check: No public nuclei template
Weakness: Use of a Broken or Risky Cryptographic Algorithm · Cryptography
Vendor: Nettle Project
Published: April 2021
Band: Possible (1 to 10%), April 2021

CoverageNo articles yet

No CyberSIXT article names CVE-2021-20305 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.