Unrated severityNVD Advisory· Published Nov 4, 2021· Updated Aug 4, 2024
CVE-2021-43396
CVE-2021-43396
Description
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.
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Affected products
2- glibc/GNU C Librarydescription
Patches
Vulnerability mechanics
References
4- blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396mitrex_refsource_MISC
- sourceware.org/bugzilla/show_bug.cgimitrex_refsource_MISC
- sourceware.org/git/mitrex_refsource_MISC
- www.oracle.com/security-alerts/cpujul2022.htmlmitre
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