Red Hat Bug Fix Advisory: OpenShift Container Platform 4.7.23 packages update

Fixed packages 20

Vulnerabilities 5

• Medium 5.9
  CVE-2021-31525

  golang.org/x/net/http/httpguts vulnerable to Uncontrolled Recursion

  net/http in Go before 1.15.12 and 1.16.x before 1.16.4 allows remote attackers to cause a denial of service (panic) via a large header to ReadRequest or ReadResponse. Server, Transport, and Client can each be affected in some configurations.

  go stdlib k3d golang-1.16 Debian Ubuntu Alpine Wolfi Go
  May 27, 2021
• Unscored —
  CVE-2021-33195

  Improper sanitization when resolving values from DNS in net

  Go before 1.15.13 and 1.16.x before 1.16.5 has functions for DNS lookups that do not validate replies from DNS servers, and thus a return value may contain an unsafe injection (e.g., XSS) that does not conform to the RFC1035 format.

  golang go stdlib golang-1.8 Debian Ubuntu Azure Linux Alpine Go
  Aug 2, 2021
• Unscored —
  CVE-2021-33197

  Attacker can drop certain headers in net/http/httputil

  In Go before 1.15.13 and 1.16.x before 1.16.5, some configurations of ReverseProxy (from net/http/httputil) result in a situation where an attacker is able to drop arbitrary headers.

  golang go stdlib golang-1.8 Debian Ubuntu Azure Linux Alpine Go
  Aug 2, 2021
• Unscored —
  CVE-2021-33198

  Panic on inputs with large exponents in math/big

  In Go before 1.15.13 and 1.16.x before 1.16.5, there can be a panic for a large exponent to the math/big.Rat SetString or UnmarshalText method.

  go stdlib golang-1.8 golang-1.16 Debian Ubuntu Alpine Go
  Aug 2, 2021
• Unscored —
  CVE-2021-34558 Public exploit

  Panic on certain certificates in crypto/tls

  The crypto/tls package of Go through 1.16.5 does not properly assert that the type of public key in an X.509 certificate matches the expected type when doing a RSA based key exchange, allowing a malicious TLS server to cause a TLS client to panic.

  golang go stdlib golang-1.8 Debian Ubuntu Azure Linux Alpine Go
  Jul 15, 2021

References

• report
  https://bugzilla.redhat.com/show_bug.cgi?id=1988937
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2021/rhba-2021_2979.json
• report
  https://access.redhat.com/security/cve/CVE-2021-31525
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=1958341
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-31525
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-31525
• article
  https://groups.google.com/g/golang-announce/c/cu9SP4eSXMc
• report
  https://access.redhat.com/security/cve/CVE-2021-33195
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=1989564
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-33195
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-33195
• article
  https://groups.google.com/g/golang-announce/c/RgCMkAEQjSI
• report
  https://access.redhat.com/security/cve/CVE-2021-33197
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=1989570
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-33197
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-33197
• report
  https://access.redhat.com/security/cve/CVE-2021-33198
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=1989575
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-33198
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-33198
• report
  https://access.redhat.com/security/cve/CVE-2021-34558
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=1983596
• advisory
  https://www.cve.org/CVERecord?id=CVE-2021-34558
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2021-34558
• article
  https://golang.org/doc/devel/release#go1.15.minor
• article
  https://golang.org/doc/devel/release#go1.16.minor