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Security Advisories: GSA_kwCzR0hTQS0zdm00LTIyZnAtNXJmbc4AArAQ

golang.org/x/crypto/ssh NULL Pointer Dereference vulnerability

A nil pointer dereference in the golang.org/x/crypto/ssh component through v0.0.0-20201203163018-be400aefbc4c for Go allows remote attackers to cause a denial of service against SSH servers. An attacker can craft an authentication request message for the gssapi-with-mic method which will cause NewServerConn to panic via a nil pointer dereference if ServerConfig.GSSAPIWithMICConfig is nil.

Permalink: https://github.com/advisories/GHSA-3vm4-22fp-5rfm
JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS0zdm00LTIyZnAtNXJmbc4AArAQ
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: 0.00907
EPSS Percentile: 0.82528

Identifiers: GHSA-3vm4-22fp-5rfm, CVE-2020-29652
References:

• https://nvd.nist.gov/vuln/detail/CVE-2020-29652
• https://go-review.googlesource.com/c/crypto/+/278852
• https://groups.google.com/g/golang-announce/c/ouZIlBimOsE?pli=1
• https://lists.apache.org/thread.html/r68032132c0399c29d6cdc7bd44918535da54060a10a12b1591328bff@%3Cnotifications.skywalking.apache.org%3E
• https://go.dev/cl/278852
• https://go.googlesource.com/crypto/+/8b5274cf687fd9316b4108863654cc57385531e8
• https://pkg.go.dev/vuln/GO-2021-0227
• https://github.com/advisories/GHSA-3vm4-22fp-5rfm

Blast Radius: 40.7

Affected Packages