QID 239803

Date Published: 2021-11-10

QID 239803: Red Hat Update for go-toolset:rhel8 security (RHSA-2021:4156)

go toolset provides the go programming language tools and libraries.
Go is alternatively known as golang.

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

Affected Products:

  • Red Hat enterprise linux for x86_64 8 x86_64
  • Red Hat enterprise linux for ibm z systems 8 s390x
  • Red Hat enterprise linux for power, little endian 8 ppc64le
  • Red Hat enterprise linux for arm 64 8 aarch64



Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

On successful exploitation, it could allow an attacker to execute code.

  • CVSS V3 rated as High - 7.5 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Upgrade to the latest packages which contain a patch.

    Refer to Refer to :
    Applying Package Updates to RHEL system     for details.

    Refer to Red Hat security advisory RHSA-2021:4156 Update to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239803

    CVE-2021-33195 | CVE-2021-33197 | CVE-2021-33198 | CVE-2021-36221 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:4156 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:4156
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