Vulnerability Details 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, which ought to require a separate application bug to do so unintentionally. Hence there's no security impact to the bug.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 30.3%
CVSS Severity
CVSS v3 Score 7.5
CVSS v2 Score 5.0
References
- https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396
- https://sourceware.org/bugzilla/show_bug.cgi?id=28524
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396
- https://sourceware.org/bugzilla/show_bug.cgi?id=28524
- https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d
- https://www.oracle.com/security-alerts/cpujul2022.html
Products affected by CVE-2021-43396
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cpe:2.3:a:gnu:glibc:2.34
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cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3
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Oracle » Communications Cloud Native Core Network Function Cloud Native Environment » Version: 22.1.0cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:22.1.0
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cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:22.1.2
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cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:22.2.0
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cpe:2.3:a:oracle:communications_cloud_native_core_security_edge_protection_proxy:22.1.1
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cpe:2.3:a:oracle:communications_cloud_native_core_unified_data_repository:22.2.0
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cpe:2.3:a:oracle:enterprise_operations_monitor:4.3
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cpe:2.3:a:oracle:enterprise_operations_monitor:4.4
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cpe:2.3:a:oracle:enterprise_operations_monitor:5.0