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Medium RLSA-2021:4226 5 CVEs

Moderate: grafana security, bug fix, and enhancement update

Published Nov 9, 2021 · Updated Feb 5, 2026

Ecosystem: Rocky Linux

Summary

Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB.

The following packages have been upgraded to a later upstream version: grafana (7.5.9). (BZ#1921191)

Security Fix(es):

* golang: crypto/elliptic: incorrect operations on the P-224 curve (CVE-2021-3114)

* grafana: snapshot feature allow an unauthenticated remote attacker to trigger a DoS via a remote API call (CVE-2021-27358)

* 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: crypto/tls: certificate of wrong type is causing TLS client to panic (CVE-2021-34558)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Rocky Linux 8.5 Release Notes linked from the References section.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 8 grafana 0:7.5.9-4.el8

Vulnerabilities 5

  • High 8.2
    CVE-2021-27358 Scanner template EPSS 83%

    Denial of service in Grafana

    The snapshot feature in Grafana 6.7.3 through 7.4.1 can allow an unauthenticated remote attackers to trigger a Denial of Service via a remote API call if a commonly used configuration is set.

    grafana github.com/grafana/grafana Ubuntu Go
  • Unscored —
    CVE-2021-3114

    Incorrect operations on the P-224 curve in crypto/elliptic

    In Go before 1.14.14 and 1.15.x before 1.15.7, crypto/elliptic/p224.go can generate incorrect outputs, related to an underflow of the lowest limb during the final complete reduction in the P-224 field.

    golang go stdlib golang-1.8 Debian Ubuntu Azure Linux Alpine Go
  • 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
  • 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
  • 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

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1918750
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1921191
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1941024
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1983596
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1989564
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=1989570