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CVE-2021-43396

Published: Nov 4, 2021Updated: Nov 21, 2024 Sources: CVE List NVD csafNVD-CWE-noinfo
NVD MITRE
7.5CVSSHIGH
EPSS Score
2.9%
Top 14.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:HIntegrity
High
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

NVD-CWE-noinfo

Affected Products

glibcgnuOSS Libraries
communications cloud native core binding support functionoracle
On-prem
Databases / relational
communications cloud native core network function cloud native environmentoracle
On-premDatabase
Databases / data-warehouse-analytics
communications cloud native core network repository functionoracle
On-premDatabase
Databases / data-warehouse-analytics
communications cloud native core security edge protection proxyoracle
On-prem
Networking Infrastructure / firewall
gnuoss-projectUSOSS Librariesaka g. nu
oraclecommercialUSDatabasesaka oracle corp.
and 3 more affected products View all →

Exploitability

Official Patch Available

References

https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396
blog.tuxcare.com
https://sourceware.org/bugzilla/show_bug.cgi?id=28524
sourceware.org
https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d
sourceware.org
and 11 more references View all →

Timeline

Published
Nov 4, 2021
Last Updated
Nov 21, 2024

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