Ecosyste.ms: Advisories

Security Advisories: GSA_kwCzR0hTQS1nd2M5LW03cmgtajJ3d84AAup1

x/crypto/ssh vulnerable to panic via malformed packets

The x/crypto/ssh package before 0.0.0-20211202192323-5770296d904e of golang.org/x/crypto allows an unauthenticated attacker to panic an SSH server. When using AES-GCM or ChaCha20Poly1305, consuming a malformed packet which contains an empty plaintext causes a panic.

Permalink: https://github.com/advisories/GHSA-gwc9-m7rh-j2ww
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS1nd2M5LW03cmgtajJ3d84AAup1
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: over 1 year ago

CVSS Score: 7.5
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Percentage: 0.00081
EPSS Percentile: 0.36762

Identifiers: GHSA-gwc9-m7rh-j2ww, CVE-2021-43565
References:

• https://nvd.nist.gov/vuln/detail/CVE-2021-43565
• https://groups.google.com/forum/#!forum/golang-announce
• https://groups.google.com/g/golang-announce/c/2AR1sKiM-Qs
• https://go.dev/cl/368814/
• https://go.dev/issues/49932
• https://pkg.go.dev/vuln/GO-2022-0968
• https://github.com/advisories/GHSA-gwc9-m7rh-j2ww

Blast Radius: 40.7

Affected Packages