QID 239279

Date Published: 2021-05-20

QID 239279: Red Hat Update for bind (RHSA-2021:2028)

The Berkeley Internet Name Domain (BIND)
is an implementation of the Domain Name System (DNS)
protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

Security Fix(es): bind: An assertion check can fail while answering queries for DNAME records that require the DNAME to be processed to resolve itself (CVE-2021-25215)

Affected Products:

Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.1 x86_64
Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.1 s390x
Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.1 ppc64le
Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.1 aarch64
Red Hat Enterprise Linux Server (for IBM Power LE) - Update Services for SAP Solutions 8.1 ppc64le
Red Hat Enterprise Linux Server - Update Services for SAP Solutions 8.1 x86_64

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 Medium - 5 severity.
    • Solution
    Upgrade to the latest packages which contain a patch. Refer to Applying Package Updates to RHEL system for details.

    Refer to Red Hat security advisory RHSA-2021:2028 to address this issue and obtain more information.

    Vendor References

    CVEs related to QID 239279

    CVE-2021-25215 |
    Software Advisories
    Advisory ID Software Component Link
    RHSA-2021:2028 Red Hat Enterprise Linux URL Logo access.redhat.com/errata/RHSA-2021:2028?language=en
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