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CVE-2019-3691— Local privilege escalation from user munge to root

Quick assessment

Affected
SUSE SUSE Linux Enterprise Server 15
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

munge是一款用于创建和验证凭据的身份验证服务。 munge中存在后置链接漏洞。攻击者可利用该漏洞将权限提升至root。以下产品及版本受到影响：munge 0.5.13-4.3.1之前版本（SUSE Linux Enterprise Server 15版本），munge 0.5.13-6.1之前版本（openSUSE Factory）。

CVSS 7.7 · High EPSS 0.52% · P42
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I. Basic Information for CVE-2019-3691

Vulnerability Information
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Vulnerability Title
Local privilege escalation from user munge to root
Source: CVE Program / CVE List V5
Vulnerability Description
A Symbolic Link (Symlink) Following vulnerability in the packaging of munge in SUSE Linux Enterprise Server 15; openSUSE Factory allowed local attackers to escalate privileges from user munge to root. This issue affects: SUSE Linux Enterprise Server 15 munge versions prior to 0.5.13-4.3.1. openSUSE Factory munge versions prior to 0.5.13-6.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
在文件访问前对链接解析不恰当(链接跟随)
Source: CVE Program / CVE List V5
Vulnerability Title
munge 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
munge是一款用于创建和验证凭据的身份验证服务。 munge中存在后置链接漏洞。攻击者可利用该漏洞将权限提升至root。以下产品及版本受到影响：munge 0.5.13-4.3.1之前版本（SUSE Linux Enterprise Server 15版本），munge 0.5.13-6.1之前版本（openSUSE Factory）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
SUSE SUSE Linux Enterprise Server 15 munge ~ 0.5.13-4.3.1 -
openSUSE Factory munge ~ 0.5.13-6.1 -

II. Public POCs for CVE-2019-3691

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III. Intelligence Information for CVE-2019-3691

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Vendor Advisories for CVE-2019-3691 (1)

IV. Related Vulnerabilities

Same product: SUSE Linux Enterprise Server 15
Same vendor: SUSE
Same weakness: CWE-59

V. Comments for CVE-2019-3691

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