高危
Sudo set_cmd()堆缓冲区溢出漏洞
2021-01-26 00:00:00 公开 ，2025-10-22 00:17:33 更新
- 关键漏洞
- CISA KEV
- APT漏洞
- 本地
- 公开PoC
- 开源组件漏洞
- 2024两高一弱互联网漏洞
- 2025两高一弱漏洞
- CWEs：
- CWE-193 （Off-by-one Error）
- SSVC：
- 可利用状态：已被积极利用攻击自动化：否技术影响评估：全部 2025-02-03 23:43:52
风险信息
- CVSS v2 向量
- AV:L/AC:L/Au:N/C:C/I:C/A:C
- CVSS v2 风险值
- 7.2
- CVSS v3 向量
- AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v3 风险值
- 7.8
- CVSS v3.1 向量
- AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- CVSS v3.1 风险值
- 7.8
详细信息
- 漏洞类型
- 缓冲区错误
- 漏洞描述
- 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。 在sudo中的set_cmd（）函数中发现了基于堆的缓存区溢出，这可能使本地攻击者使用sudoedit -s和一个以单个反斜杠字符结束的命令行参数升级到root。
- 修复建议
- 将sudo更新至最新版本，以便在操作可行时解决此漏洞。sudo版本1.9.5p2解决了这个问题。请安装此版本，或安装已应用修复程序的发行版版本： https://www.sudo.ws/stable.html#1.9.5p2
参考链接
- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-sudo-privesc-jan2021-qnYQfcM
OSV · vendor-advisory · x_refsource_CISCO
- https://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html
NVD · VDB Entry · Exploit · Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/
NVD
- http://seclists.org/fulldisclosure/2021/Feb/42
OSV · mailing-list · x_refsource_FULLDISC
- https://www.openwall.com/lists/oss-security/2021/01/26/3
OSV · x_refsource_MISC
- https://lists.debian.org/debian-lts-announce/2021/01/msg00022.html
OSV · mailing-list · x_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2021/01/27/1
OSV · mailing-list · x_refsource_MLIST
- https://www.sudo.ws/stable.html#1.9.5p2
OSV · x_refsource_CONFIRM
- https://kc.mcafee.com/corporate/index?page=content&id=SB10348
OSV · x_refsource_CONFIRM
- https://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html
NVD · VDB Entry · Exploit · Third Party Advisory
- https://www.kb.cert.org/vuls/id/794544
OSV · third-party-advisory · x_refsource_CERT-VN
- https://www.debian.org/security/2021/dsa-4839
OSV · vendor-advisory · x_refsource_DEBIAN
- https://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html
NVD · VDB Entry · Exploit · Third Party Advisory
- 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
OSV · x_refsource_MISC
- https://security.gentoo.org/glsa/202101-33
OSV · vendor-advisory · x_refsource_GENTOO
- https://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html
NVD · VDB Entry · Exploit · Third Party Advisory
- http://seclists.org/fulldisclosure/2021/Jan/79
OSV · mailing-list · x_refsource_FULLDISC
- https://security.netapp.com/advisory/ntap-20210128-0001/
OSV · x_refsource_CONFIRM
- http://www.openwall.com/lists/oss-security/2021/02/15/1
OSV · mailing-list · x_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2021/01/27/2
OSV · mailing-list · x_refsource_MLIST
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/
NVD
- https://security.netapp.com/advisory/ntap-20210128-0002/
OSV · x_refsource_CONFIRM
- https://support.apple.com/kb/HT212177
OSV · x_refsource_CONFIRM
- https://www.auscert.org.au/bulletins/ESB-2021.0609
- https://vigilance.fr/vulnerability/Sudo-buffer-overflow-via-Command-Unescaping-Backslashes-34414
- https://packetstormsecurity.com/files/161281/Red-Hat-Security-Advisory-2021-0401-01.html
- https://www.auscert.org.au/bulletins/ESB-2021.0467
- https://www.auscert.org.au/bulletins/ESB-2021.0329/
- https://nvd.nist.gov/vuln/detail/CVE-2021-3156
- https://www.auscert.org.au/bulletins/ESB-2021.0293/
- https://support.apple.com/en-us/HT212177
- https://www.huawei.com/cn/psirt/security-notices/huawei-sn-20210210-01-sudo-cn
- https://access.redhat.com/security/cve/cve-2021-3156
- https://packetstormsecurity.com/files/161163/Ubuntu-Security-Notice-USN-4705-2.html
- https://packetstormsecurity.com/files/161135/Ubuntu-Security-Notice-USN-4705-1.html
- https://www.exploit-db.com/exploits/49522
- https://www.auscert.org.au/bulletins/ESB-2021.0281/
- https://www.auscert.org.au/bulletins/ESB-2021.0329.2/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LHXK6ICO5AYLGFK2TAX5MZKUXTUKWOJY/
OSV · vendor-advisory · x_refsource_FEDORA
- https://www.oracle.com//security-alerts/cpujul2021.html
OSV · x_refsource_MISC
- http://www.openwall.com/lists/oss-security/2021/01/26/3
OSV · mailing-list · x_refsource_MLIST
- http://www.openwall.com/lists/oss-security/2021/09/14/2
OSV · mailing-list · x_refsource_MLIST
- https://www.synology.com/security/advisory/Synology_SA_21_02
OSV · x_refsource_CONFIRM
- http://packetstormsecurity.com/files/161270/Sudo-1.9.5p1-Buffer-Overflow-Privilege-Escalation.html
OSV · x_refsource_MISC
- https://www.oracle.com/security-alerts/cpuoct2021.html
OSV · x_refsource_MISC
- https://www.oracle.com/security-alerts/cpuapr2022.html
OSV · x_refsource_MISC
- http://packetstormsecurity.com/files/161293/Sudo-1.8.31p2-1.9.5p1-Buffer-Overflow.html
OSV · x_refsource_MISC
- http://packetstormsecurity.com/files/161160/Sudo-Heap-Based-Buffer-Overflow.html
OSV · x_refsource_MISC
- http://packetstormsecurity.com/files/161230/Sudo-Buffer-Overflow-Privilege-Escalation.html
OSV · x_refsource_MISC
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CALA5FTXIQBRRYUA2ZQNJXB6OQMAXEII/
OSV · vendor-advisory · x_refsource_FEDORA
- http://www.openwall.com/lists/oss-security/2024/01/30/6
OSV · mailing-list
- http://www.openwall.com/lists/oss-security/2024/01/30/8
OSV · mailing-list
- http://packetstormsecurity.com/files/176932/glibc-syslog-Heap-Based-Buffer-Overflow.html
OSV · VDB Entry · Exploit · Third Party Advisory
- https://security.paloaltonetworks.com/CVE-2021-3156
- https://supportportal.juniper.net/s/article/2022-04-Security-Bulletin-Juniper-Secure-Analytics-JSA-Series-Heap-Based-Buffer-Overflow-in-Sudo-CVE-2021-3156
- http://seclists.org/fulldisclosure/2024/Feb/3
OSV · mailing-list
- https://www.cisa.gov/news-events/ics-advisories/icsa-22-256-01
- https://osv.dev/vulnerability/CVE-2021-3156
OSV
- https://osv.dev/vulnerability/DLA-2534-1
OSV
- https://osv.dev/vulnerability/DSA-4839-1
OSV
- https://security.alpinelinux.org/vuln/CVE-2021-3156
OSV
- https://security-tracker.debian.org/tracker/CVE-2021-3156
OSV
- https://www.vicarius.io/vsociety/posts/sudoedit-pwned-cve-2021-3156
CVE · Third Party Advisory · Exploit
- https://ubuntu.com/security/CVE-2021-3156
OSV
- https://ubuntu.com/security/notices/USN-4705-1
OSV
- https://ubuntu.com/security/notices/USN-4705-2
OSV
- https://www.cve.org/CVERecord?id=CVE-2021-3156
OSV
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog
OSV
- https://osv.dev/vulnerability/UBUNTU-CVE-2021-3156
OSV
- https://osv.dev/vulnerability/DEBIAN-CVE-2021-3156
OSV
- https://osv.dev/vulnerability/ALPINE-CVE-2021-3156
OSV
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3156
NVD · US Government Resource