high
7.5
Advisory Published
Updated

CVE-2021-43396

First published: Thu Nov 04 2021(Updated: )

** DISPUTED ** In iconvdata/iso-2022-jp-3.c in the GNU C Library (aka glibc) 2.34, remote attackers can force iconv() to emit a spurious '\0' character via crafted ISO-2022-JP-3 data that is accompanied by an internal state reset. This may affect data integrity in certain iconv() use cases. NOTE: the vendor states "the bug cannot be invoked through user input and requires iconv to be invoked with a NULL inbuf, which ought to require a separate application bug to do so unintentionally. Hence there's no security impact to the bug."

Credit: cve@mitre.org cve@mitre.org

Affected SoftwareAffected VersionHow to fix
GNU glibc=2.34
Oracle Communications Cloud Native Core Binding Support Function=22.1.3
Oracle Communications Cloud Native Core Network Function Cloud Native Environment=22.1.0
Oracle Communications Cloud Native Core Network Repository Function=22.1.2
Oracle Communications Cloud Native Core Network Repository Function=22.2.0
Oracle Communications Cloud Native Core Security Edge Protection Proxy=22.1.1
Oracle Communications Cloud Native Core Unified Data Repository=22.2.0
Oracle Enterprise Operations Monitor=4.3
Oracle Enterprise Operations Monitor=4.4
Oracle Enterprise Operations Monitor=5.0
=2.34
=22.1.3
=22.1.0
=22.1.2
=22.2.0
=22.1.1
=22.2.0
=4.3
=4.4
=5.0

Remedy

https://www.oracle.com/security-alerts/cpujul2022.html

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Reference Links

Frequently Asked Questions

  • What is CVE-2021-43396?

    CVE-2021-43396 is a vulnerability in the GNU C Library (glibc) 2.34 that allows remote attackers to force iconv() to emit a spurious '\0' character via crafted ISO-2022-JP-3 data, potentially affecting data integrity.

  • What is the severity of CVE-2021-43396?

    CVE-2021-43396 has a severity rating of 7.5 (High).

  • How does CVE-2021-43396 affect GNU C Library (glibc)?

    CVE-2021-43396 affects glibc version 2.34 by allowing remote attackers to manipulate iconv() to emit a spurious '\0' character, which can impact data integrity in certain use cases.

  • How can the CVE-2021-43396 vulnerability be fixed?

    A fix for CVE-2021-43396 has not been released at this time. It is recommended to update to a version of glibc that addresses this vulnerability when it becomes available.

  • Where can I find more information about CVE-2021-43396?

    For more information about CVE-2021-43396, you can refer to the following sources: [link1], [link2], [link3].

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