CVE-2021-43396

 

Published at: - 04-11-2021 09:15

Last modified: - 25-07-2022 08:17

Total changes: - 2

Description

** DISPUTED ** 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."

Common Vulnerability Scoring System (CVSS)

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

 

Verification logic

 

Reference

• https://sourceware.org/bugzilla/show_bug.cgi?id=28524
• https://sourceware.org/git/?p=glibc.git;a=commit;h=ff012870b2c02a62598c04daa1e54632e020fd7d
• https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396
• N/A-

 

Keywords

NVD

 

CVE-2021-43396

 

CVE

 

Common vulnerabilities & exposures

 

CVSS

 

Common vulnerability scoring system

 

Security

 

Vulnerabilities

 

Exposures