RHSA-2021:4156MediumCVSS 7.5

Red Hat Security Advisory: go-toolset:rhel8 security, bug fix, and enhancement update

Published
November 9, 2021
Last Modified
August 4, 2026

🔗 CVE IDs covered (4)

CVE-2021-33195 →CVE-2021-33197 →CVE-2021-33198 →CVE-2021-36221 →

📋 Description

CVE-2021-33195 — golang: net: lookup functions may return invalid host names CVE-2021-33197 — golang: net/http/httputil: ReverseProxy forwards connection headers if first one is empty CVE-2021-33198 — golang: math/big.Rat: may cause a panic or an unrecoverable fatal error if passed inputs with very large exponents CVE-2021-36221 — golang: net/http/httputil: panic due to racy read of persistConn after handler panic

🎯 Affected products24

  • Red Hat Enterprise Linux AppStream (v. 8)
  • delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.src (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • delve-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • delve-debuginfo-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • delve-debugsource-0:1.6.0-1.module+el8.5.0+10379+d6b83bd0.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.src (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • go-toolset-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.src (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-bin-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.aarch64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-bin-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.ppc64le (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-bin-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.s390x (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-bin-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-docs-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-misc-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-race-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.x86_64 (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-src-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)
  • golang-tests-0:1.16.7-1.module+el8.5.0+12246+1aac4e3f.noarch (go-toolset:rhel8) as a component of Red Hat Enterprise Linux AppStream (v. 8)

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

🔗 References (11)