cnvd - cnvd-2016-02933

cnvd-2016-02933

Vulnerability from cnvd

Title: Libksba 'decoder src/dn.c'整数溢出漏洞

Description:

Libksba是GNU计划开发的GnuPG项目中的一个可简单化X.509证书、CMS数据和相关对象的工作任务的库。

Libksba的DN decoder src/dn.c文件中存在整数溢出漏洞。攻击者可通过无效的utf-8编码利用该漏洞造成拒绝服务（越边界读访问和无限循环）。

Severity: 中

Patch Name: Libksba 'decoder src/dn.c'整数溢出漏洞的补丁

Patch Description:

Libksba是GNU计划开发的GnuPG项目中的一个可简单化X.509证书、CMS数据和相关对象的工作任务的库。

Libksba的DN decoder src/dn.c文件中存在整数溢出漏洞。攻击者可通过无效的utf-8编码利用该漏洞造成拒绝服务（越边界读访问和无限循环）。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已经发布了升级补丁以修复此安全问题，详情请关注厂商主页： https://www.gnupg.org/related_software/libksba/index.html

Reference: https://security.gentoo.org/glsa/201604-04 http://www.openwall.com/lists/oss-security/2016/04/29/8

Impacted products

Name
Libksba Libksba <1.3.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-4356"
    }
  },
  "description": "Libksba\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684GnuPG\u9879\u76ee\u4e2d\u7684\u4e00\u4e2a\u53ef\u7b80\u5355\u5316X.509\u8bc1\u4e66\u3001CMS\u6570\u636e\u548c\u76f8\u5173\u5bf9\u8c61\u7684\u5de5\u4f5c\u4efb\u52a1\u7684\u5e93\u3002\r\n\r\nLibksba\u7684DN decoder src/dn.c\u6587\u4ef6\u4e2d\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u65e0\u6548\u7684utf-8\u7f16\u7801\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d8a\u8fb9\u754c\u8bfb\u8bbf\u95ee\u548c\u65e0\u9650\u5faa\u73af\uff09\u3002",
  "discovererName": "unknown",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttps://www.gnupg.org/related_software/libksba/index.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-02933",
  "openTime": "2016-05-11",
  "patchDescription": "Libksba\u662fGNU\u8ba1\u5212\u5f00\u53d1\u7684GnuPG\u9879\u76ee\u4e2d\u7684\u4e00\u4e2a\u53ef\u7b80\u5355\u5316X.509\u8bc1\u4e66\u3001CMS\u6570\u636e\u548c\u76f8\u5173\u5bf9\u8c61\u7684\u5de5\u4f5c\u4efb\u52a1\u7684\u5e93\u3002\r\n\r\nLibksba\u7684DN decoder src/dn.c\u6587\u4ef6\u4e2d\u5b58\u5728\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u65e0\u6548\u7684utf-8\u7f16\u7801\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u8d8a\u8fb9\u754c\u8bfb\u8bbf\u95ee\u548c\u65e0\u9650\u5faa\u73af\uff09\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Libksba \u0027decoder src/dn.c\u0027\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Libksba Libksba \u003c1.3.3"
  },
  "referenceLink": "https://security.gentoo.org/glsa/201604-04\r\nhttp://www.openwall.com/lists/oss-security/2016/04/29/8",
  "serverity": "\u4e2d",
  "submitTime": "2016-05-04",
  "title": "Libksba \u0027decoder src/dn.c\u0027\u6574\u6570\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2016-4356 (GCVE-0-2016-4356)

Vulnerability from cvelistv5

Published

2016-06-13 19:00

Modified

2024-08-06 00:25

Severity ?

CWE

Summary

The append_utf8_value function in the DN decoder (dn.c) in Libksba before 1.3.3 allows remote attackers to cause a denial of service (out-of-bounds read) by clearing the high bit of the byte after invalid utf-8 encoded data.

References

▼	URL	Tags
	http://www.openwall.com/lists/oss-security/2016/05/10/3	mailing-list, x_refsource_MLIST
	http://www.ubuntu.com/usn/USN-2982-1	vendor-advisory, x_refsource_UBUNTU
	http://www.openwall.com/lists/oss-security/2016/04/29/5	mailing-list, x_refsource_MLIST
	http://www.openwall.com/lists/oss-security/2016/04/29/8	mailing-list, x_refsource_MLIST
	http://git.gnupg.org/cgi-bin/gitweb.cgi?p=libksba.git%3Ba=commit%3Bh=243d12fdec66a4360fbb3e307a046b39b5b4ffc3	x_refsource_CONFIRM
	https://security.gentoo.org/glsa/201604-04	vendor-advisory, x_refsource_GENTOO

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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