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Related Vulnerabilities: CVE-2021-25215

A flaw was found in bind. The way DNAME records are processed may trigger the same RRset to the ANSWER section to be added more than once which causes an assertion check to fail. The highest threat from this flaw is to system availability. (CVE-2021-25215)

Source

ALAS2-2021-1635

Amazon Linux 2 Security Advisory: ALAS-2021-1635
Advisory Release Date: 2021-05-20 15:46 Pacific
Advisory Updated Date: 2021-05-24 17:51 Pacific

Severity: Important

References: CVE-2021-25215

Issue Overview:

A flaw was found in bind. The way DNAME records are processed may trigger the same RRset to the ANSWER section to be added more than once which causes an assertion check to fail. The highest threat from this flaw is to system availability. (CVE-2021-25215)

Affected Packages:

bind

Issue Correction:
Run yum update bind to update your system.

New Packages:

aarch64:
    bind-9.11.4-26.P2.amzn2.5.aarch64
    bind-pkcs11-9.11.4-26.P2.amzn2.5.aarch64
    bind-pkcs11-utils-9.11.4-26.P2.amzn2.5.aarch64
    bind-pkcs11-libs-9.11.4-26.P2.amzn2.5.aarch64
    bind-pkcs11-devel-9.11.4-26.P2.amzn2.5.aarch64
    bind-sdb-9.11.4-26.P2.amzn2.5.aarch64
    bind-libs-lite-9.11.4-26.P2.amzn2.5.aarch64
    bind-libs-9.11.4-26.P2.amzn2.5.aarch64
    bind-utils-9.11.4-26.P2.amzn2.5.aarch64
    bind-devel-9.11.4-26.P2.amzn2.5.aarch64
    bind-lite-devel-9.11.4-26.P2.amzn2.5.aarch64
    bind-chroot-9.11.4-26.P2.amzn2.5.aarch64
    bind-sdb-chroot-9.11.4-26.P2.amzn2.5.aarch64
    bind-export-libs-9.11.4-26.P2.amzn2.5.aarch64
    bind-export-devel-9.11.4-26.P2.amzn2.5.aarch64
    bind-debuginfo-9.11.4-26.P2.amzn2.5.aarch64

i686:
    bind-9.11.4-26.P2.amzn2.5.i686
    bind-pkcs11-9.11.4-26.P2.amzn2.5.i686
    bind-pkcs11-utils-9.11.4-26.P2.amzn2.5.i686
    bind-pkcs11-libs-9.11.4-26.P2.amzn2.5.i686
    bind-pkcs11-devel-9.11.4-26.P2.amzn2.5.i686
    bind-sdb-9.11.4-26.P2.amzn2.5.i686
    bind-libs-lite-9.11.4-26.P2.amzn2.5.i686
    bind-libs-9.11.4-26.P2.amzn2.5.i686
    bind-utils-9.11.4-26.P2.amzn2.5.i686
    bind-devel-9.11.4-26.P2.amzn2.5.i686
    bind-lite-devel-9.11.4-26.P2.amzn2.5.i686
    bind-chroot-9.11.4-26.P2.amzn2.5.i686
    bind-sdb-chroot-9.11.4-26.P2.amzn2.5.i686
    bind-export-libs-9.11.4-26.P2.amzn2.5.i686
    bind-export-devel-9.11.4-26.P2.amzn2.5.i686
    bind-debuginfo-9.11.4-26.P2.amzn2.5.i686

noarch:
    bind-license-9.11.4-26.P2.amzn2.5.noarch

src:
    bind-9.11.4-26.P2.amzn2.5.src

x86_64:
    bind-9.11.4-26.P2.amzn2.5.x86_64
    bind-pkcs11-9.11.4-26.P2.amzn2.5.x86_64
    bind-pkcs11-utils-9.11.4-26.P2.amzn2.5.x86_64
    bind-pkcs11-libs-9.11.4-26.P2.amzn2.5.x86_64
    bind-pkcs11-devel-9.11.4-26.P2.amzn2.5.x86_64
    bind-sdb-9.11.4-26.P2.amzn2.5.x86_64
    bind-libs-lite-9.11.4-26.P2.amzn2.5.x86_64
    bind-libs-9.11.4-26.P2.amzn2.5.x86_64
    bind-utils-9.11.4-26.P2.amzn2.5.x86_64
    bind-devel-9.11.4-26.P2.amzn2.5.x86_64
    bind-lite-devel-9.11.4-26.P2.amzn2.5.x86_64
    bind-chroot-9.11.4-26.P2.amzn2.5.x86_64
    bind-sdb-chroot-9.11.4-26.P2.amzn2.5.x86_64
    bind-export-libs-9.11.4-26.P2.amzn2.5.x86_64
    bind-export-devel-9.11.4-26.P2.amzn2.5.x86_64
    bind-debuginfo-9.11.4-26.P2.amzn2.5.x86_64

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