CVE-2021-43396
published 2021-11-04CVE-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…
PriorityP341high7.5CVSS 3.1
AVNACLPRNUINSUCNIHAN
EPSS
3.06%
86.2th percentile
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.
Affected
18 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | glibc | < glibc 2.32-5 (bookworm) | glibc 2.32-5 (bookworm) |
| gnu | glibc | — | — |
| gnu | glibc | >= 0 < 2.31-13+deb11u3 | 2.31-13+deb11u3 |
| gnu | glibc | >= 0 < 2.32-5 | 2.32-5 |
| gnu | glibc | >= 0 < 2.32-5 | 2.32-5 |
| gnu | glibc | >= 0 < 2.32-5 | 2.32-5 |
| msrc | cbl2_glibc_2.35-1_on_cbl_mariner_2.0 | — | — |
| msrc | cbl_mariner_2.0_arm | — | — |
| msrc | cbl_mariner_2.0_x64 | — | — |
| oracle | communications_cloud_native_core_binding_support_function | — | — |
| oracle | communications_cloud_native_core_network_function_cloud_native_environment | — | — |
| oracle | communications_cloud_native_core_network_repository_function | — | — |
| oracle | communications_cloud_native_core_network_repository_function | — | — |
| oracle | communications_cloud_native_core_security_edge_protection_proxy | — | — |
| oracle | communications_cloud_native_core_unified_data_repository | — | — |
| oracle | enterprise_operations_monitor | — | — |
| oracle | enterprise_operations_monitor | — | — |
| oracle | enterprise_operations_monitor | — | — |
CVSS provenance
nvdv3.17.5HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
nvdv2.05.0MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:N
osv7.5HIGH
vendor_debian7.5LOW
vendor_msrc7.5HIGH
vendor_redhat7.5HIGH
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GHSA
GHSA-73g2-m4v3-6c2h: In iconvdata/iso-2022-jp-3
ghsa_unreviewed·2022-05-24
CVE-2021-43396 [HIGH] GHSA-73g2-m4v3-6c2h: In iconvdata/iso-2022-jp-3
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.
OSV
CVE-2021-43396: In iconvdata/iso-2022-jp-3
osv·2021-11-04·CVSS 7.5
CVE-2021-43396 [HIGH] CVE-2021-43396: In iconvdata/iso-2022-jp-3
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.
Microsoft
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 interna
vendor_msrc·2021-11-09·CVSS 7.5
CVE-2021-43396 [HIGH] 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 interna
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.
FAQ: Is Azure Linux the only Microsoft product that includes this open-source library and is therefore potentially affected by this vulnerability?
One of the main benefits to our customers who choose to use the Azure Linux distro is the commitment to keep it up to date with the mo
Red Hat
glibc: conversion from ISO-2022-JP-3 with iconv may emit spurious NUL character on state reset
vendor_redhat·2021-11-01·CVSS 7.5
CVE-2021-43396 [HIGH] CWE-20 glibc: conversion from ISO-2022-JP-3 with iconv may emit spurious NUL character on state reset
glibc: conversion from ISO-2022-JP-3 with iconv may emit spurious NUL character on state reset
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.
Statement: Red Hat Product Security does not consider this to be a vulnerability.
Package: compat-glibc (Red Hat Enterprise Linux 6) - Not affected
Package: glibc (Red Hat Enterpris
Debian
CVE-2021-43396: glibc - In iconvdata/iso-2022-jp-3.c in the GNU C Library (aka glibc) 2.34, remote attac...
vendor_debian·2021·CVSS 7.5
CVE-2021-43396 [HIGH] CVE-2021-43396: glibc - In iconvdata/iso-2022-jp-3.c in the GNU C Library (aka glibc) 2.34, remote attac...
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.
Scope: local
bookworm: resolved (fixed in 2.32-5)
bullseye: resolved (fixed in 2.31-13+deb11u3)
forky: resolved (fixed in 2.32-5)
sid: resolved (fixed in 2.32-5)
trixie: resolved (fixed in 2.32-5)
No detection rules found.
No public exploits indexed.
No writeups or analysis indexed.
https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396https://sourceware.org/bugzilla/show_bug.cgi?id=28524https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7dhttps://www.oracle.com/security-alerts/cpujul2022.htmlhttps://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396https://sourceware.org/bugzilla/show_bug.cgi?id=28524https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7dhttps://www.oracle.com/security-alerts/cpujul2022.html
2021-11-04
Published