cnvd - cnvd-2021-101180

cnvd-2021-101180

Vulnerability from cnvd

Title: GNU C Library存在未明漏洞

Description:

GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。

GNU C Library (又名 glibc) 2.34版本存在安全漏洞，该漏洞源于受影响版本库中iconvdata/iso-2022-jp-3.c的iconv()存在数据校验问题。攻击者可利用该漏洞通过精心制作的ISO-2022-JP-3数据强制iconv()发出一个虚假的0字符，并伴随着内部状态重置。在某些iconv()用例中，这可能会影响数据完整性。

Severity: 中

Patch Name: GNU C Library存在未明漏洞的补丁

Patch Description:

GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。

Formal description:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://sourceware.org/bugzilla/show_bug.cgi?id=28524

Reference: https://sourceware.org/bugzilla/show_bug.cgi?id=28524

Impacted products

Name
GNU C Library 2.34

Show details on source website

JSON

To clipboard

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    "cve": {
      "cveNumber": "CVE-2021-43396"
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  "number": "CNVD-2021-101180",
  "openTime": "2021-12-21",
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  "serverity": "\u4e2d",
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}

CVE-2021-43396 (GCVE-0-2021-43396)

Vulnerability from cvelistv5

Published

2021-11-04 19:52

Modified

2024-08-04 03:55

Severity ?

CWE

Summary

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.

References

▼	URL	Tags
	https://sourceware.org/bugzilla/show_bug.cgi?id=28524	x_refsource_MISC
	https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=ff012870b2c02a62598c04daa1e54632e020fd7d	x_refsource_MISC
	https://blog.tuxcare.com/vulnerability/vulnerability-in-iconv-identified-by-tuxcare-team-cve-2021-43396	x_refsource_MISC
	https://www.oracle.com/security-alerts/cpujul2022.html

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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