cnvd - cnvd-2021-07130

cnvd-2021-07130

Vulnerability from cnvd

Title: Sudo缓冲区溢出漏洞

Description:

Sudo是一款使用于类Unix系统的，允许用户通过安全的方式使用特殊的权限执行命令的程序。

Sudo存在缓冲区溢出漏洞。攻击者可利用该漏洞获得系统root权限。

Severity: 高

Patch Name: Sudo缓冲区溢出漏洞的补丁

Patch Description:

Sudo是一款使用于类Unix系统的，允许用户通过安全的方式使用特殊的权限执行命令的程序。

Sudo存在缓冲区溢出漏洞。攻击者可利用该漏洞获得系统root权限。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这个安全问题，请到厂商的主页下载： https://www.sudo.ws/alerts/unescape_overflow.html

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-3156 https://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html

Impacted products

Name
Sudo Sudo <1.9.5p2

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2021-3156",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2021-3156"
    }
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  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-07130",
  "openTime": "2021-01-28",
  "patchDescription": "Sudo\u662f\u4e00\u6b3e\u4f7f\u7528\u4e8e\u7c7bUnix\u7cfb\u7edf\u7684\uff0c\u5141\u8bb8\u7528\u6237\u901a\u8fc7\u5b89\u5168\u7684\u65b9\u5f0f\u4f7f\u7528\u7279\u6b8a\u7684\u6743\u9650\u6267\u884c\u547d\u4ee4\u7684\u7a0b\u5e8f\u3002\r\n\r\nSudo\u5b58\u5728\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97\u7cfb\u7edfroot\u6743\u9650\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": "Sudo\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e\u7684\u8865\u4e01",
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  "serverity": "\u9ad8",
  "submitTime": "2021-01-27",
  "title": "Sudo\u7f13\u51b2\u533a\u6ea2\u51fa\u6f0f\u6d1e"
}

CVE-2021-3156 (GCVE-0-2021-3156)

Vulnerability from cvelistv5

Published

2021-01-26 00:00

Modified

2025-07-30 01:45

Severity ?

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CWE

Summary

Sudo before 1.9.5p2 contains an off-by-one error that can result in a heap-based buffer overflow, which allows privilege escalation to root via "sudoedit -s" and a command-line argument that ends with a single backslash character.

References

▼	URL	Tags
	https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html	mailing-list
	http://seclists.org/fulldisclosure/2021/Jan/79	mailing-list
	http://www.openwall.com/lists/oss-security/2021/01/26/3	mailing-list
	https://security.gentoo.org/glsa/202101-33	vendor-advisory
	https://www.debian.org/security/2021/dsa-4839	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/	vendor-advisory
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/	vendor-advisory
	http://www.openwall.com/lists/oss-security/2021/01/27/1	mailing-list
	http://www.openwall.com/lists/oss-security/2021/01/27/2	mailing-list
	https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM	vendor-advisory
	https://www.kb.cert.org/vuls/id/794544	third-party-advisory
	http://seclists.org/fulldisclosure/2021/Feb/42	mailing-list
	http://www.openwall.com/lists/oss-security/2021/02/15/1	mailing-list
	https://www.oracle.com//security-alerts/cpujul2021.html
	https://www.sudo.ws/stable.html#1.9.5p2
	https://www.openwall.com/lists/oss-security/2021/01/26/3
	http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html
	https://security.netapp.com/advisory/ntap-20210128-0002/
	https://security.netapp.com/advisory/ntap-20210128-0001/
	http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html
	http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html
	http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html
	https://support.apple.com/kb/HT212177
	https://kc.mcafee.com/corporate/index?page=content&id=SB10348
	https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability
	https://www.synology.com/security/advisory/Synology_SA_21_02
	http://www.openwall.com/lists/oss-security/2021/09/14/2	mailing-list
	https://www.oracle.com/security-alerts/cpuoct2021.html
	https://www.oracle.com/security-alerts/cpuapr2022.html
	http://www.openwall.com/lists/oss-security/2024/01/30/8	mailing-list
	http://www.openwall.com/lists/oss-security/2024/01/30/6	mailing-list
	http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
	http://seclists.org/fulldisclosure/2024/Feb/3	mailing-list
	https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156

Impacted products

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

Show details on NVD website

JSON

To clipboard

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        },
        {
          "name": "20210211 APPLE-SA-2021-02-09-1 macOS Big Sur 11.2.1, macOS Catalina 10.15.7 Supplemental Update, and macOS Mojave 10.14.6 Security Update 2021-002",
          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2021/Feb/42"
        },
        {
          "name": "[oss-security] 20210215 Re: sudo: Ineffective NO_ROOT_MAILER and Baron Samedit",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/02/15/1"
        },
        {
          "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
        },
        {
          "url": "https://www.sudo.ws/stable.html#1.9.5p2"
        },
        {
          "url": "https://www.openwall.com/lists/oss-security/2021/01/26/3"
        },
        {
          "url": "http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210128-0002/"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20210128-0001/"
        },
        {
          "url": "http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html"
        },
        {
          "url": "https://support.apple.com/kb/HT212177"
        },
        {
          "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10348"
        },
        {
          "url": "https://www.beyondtrust.com/blog/entry/security-advisory-privilege-management-for-unix-linux-pmul-basic-and-privilege-management-for-mac-pmm-affected-by-sudo-vulnerability"
        },
        {
          "url": "https://www.synology.com/security/advisory/Synology_SA_21_02"
        },
        {
          "name": "[oss-security] 20210914 Re: Oracle Solaris membership in the distros list",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2021/09/14/2"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
        },
        {
          "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
        },
        {
          "name": "[oss-security] 20240130 Re: CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2024/01/30/8"
        },
        {
          "name": "[oss-security] 20240130 CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
          "tags": [
            "mailing-list"
          ],
          "url": "http://www.openwall.com/lists/oss-security/2024/01/30/6"
        },
        {
          "url": "http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html"
        },
        {
          "name": "20240204 CVE-2023-6246: Heap-based buffer overflow in the glibc\u0027s syslog()",
          "tags": [
            "mailing-list"
          ],
          "url": "http://seclists.org/fulldisclosure/2024/Feb/3"
        },
        {
          "url": "https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2021-3156",
    "datePublished": "2021-01-26T00:00:00.000Z",
    "dateReserved": "2021-01-15T00:00:00.000Z",
    "dateUpdated": "2025-07-30T01:45:28.705Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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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