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.
Products affected by CVE-2021-43396
- cpe:2.3:a:gnu:glibc:2.34:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
- 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:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_unified_data_repository: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_network_repository_function:22.2.0:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:22.1.2:*:*:*:*:*:*:*
- cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:22.1.3:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-43396
0.74%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 81 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-43396
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
5.0
|
MEDIUM | AV:N/AC:L/Au:N/C:N/I:P/A:N |
10.0
|
2.9
|
NIST | |
|
7.5
|
HIGH | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
3.9
|
3.6
|
NIST |
References for CVE-2021-43396
-
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d
sourceware.org Git
-
https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396
Vulnerability in iconv identified by TuxCare Team (CVE-2021-43396)Exploit;Third Party Advisory
-
https://sourceware.org/git/?p=glibc.git;a=commit;h=ff012870b2c02a62598c04daa1e54632e020fd7d
sourceware.org Git - glibc.git/commitMailing List;Third Party Advisory
-
https://sourceware.org/bugzilla/show_bug.cgi?id=28524
28524 – Conversion from ISO-2022-JP-3 with iconv may emit spurious NUL character on state resetExploit;Issue Tracking;Third Party Advisory
-
https://www.oracle.com/security-alerts/cpujul2022.html
Oracle Critical Patch Update Advisory - July 2022Patch;Third Party Advisory
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