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Vulnerability · Published Apr 3, 2020 · Assigned by mitre

CVE-2020-11501

High 7.4

In plain English

A high-severity security flaw in the gnutls package (Alpine). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 3.4% (higher than 89% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)7.4High
Exploit odds (30 days)3.4%top 11.1% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

GnuTLS 3.6.x before 3.6.13 uses incorrect cryptography for DTLS. The earliest affected version is 3.6.3 (2018-07-16) because of an error in a 2017-10-06 commit. The DTLS client always uses 32 '\0' bytes instead of a random value, and thus contributes no randomness to a DTLS negotiation. This breaks the security guarantees of the DTLS protocol.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Alpine:v3.20gnutls3.6.13-r0ALPINE-CVE-2020-11501
Alpine:v3.21gnutls3.6.13-r0ALPINE-CVE-2020-11501
Alpine:v3.22gnutls3.6.13-r0ALPINE-CVE-2020-11501
Alpine:v3.23gnutls3.6.13-r0ALPINE-CVE-2020-11501
Alpine:v3.24gnutls3.6.13-r0ALPINE-CVE-2020-11501
Debian:12gnutls283.6.13-2DEBIAN-CVE-2020-11501
Debian:13gnutls283.6.13-2DEBIAN-CVE-2020-11501
Debian:14gnutls283.6.13-2DEBIAN-CVE-2020-11501

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References