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.
Fix
Patch, vendor advisory and mitigation references on NVD 2
- https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
- https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · gnu, oracleNVD modified 2026-10-14 12:17
Affected (CPE criteria) 10
cpe:2.3:a:gnu:glibc:2.34:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:22.1.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:22.1.2:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:22.2.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:22.1.1:*:*:*:*:*:*:*cpe:2.3:a:oracle:communications_cloud_native_core_unified_data_repository:22.2.0:*:*:*:*:*:*:*cpe:2.3:a:oracle:enterprise_operations_monitor:4.3:*:*:*:*:*:*:*cpe:2.3:a:oracle:enterprise_operations_monitor:4.4:*:*:*:*:*:*:*cpe:2.3:a:oracle:enterprise_operations_monitor:5.0:*:*:*:*:*:*:*
References 9
- https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396 Exploit, Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=28524 Exploit, Issue Tracking, Third Party Advisory
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d
- https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
- https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396 Exploit, Third Party Advisory
- https://sourceware.org/bugzilla/show_bug.cgi?id=28524 Exploit, Issue Tracking, Third Party Advisory
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d
- https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
- https://cert-portal.siemens.com/productcert/html/ssa-398330.html