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Servers and applications

CVE-2021-43396

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,…

Severity
High 7.5
Published
4 Nov 2021
Last changed
14 Oct 2026
Added to UpHeron
1 Nov 2026
Sources
NVD

Affected software

SoftwareAffected versions
GNU C LibraryServers and applications · cpe:a:gnu:glibc
  • Version 2.34

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2021-43396
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2021-43396