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CVE-2022-21944— watchman: chown in watchman@.socket unit allows symlink attack

Quick assessment

Affected
openSUSE openSUSE Backports SLE-15-SP3
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.

SUSE Linux Enterprise Server是德国SUSE公司的一套企业服务器版Linux操作系统。 SUSE Linux Enterprise Server (SLES) 存在安全漏洞，攻击者可以创建一个符号链接，以通过 Socket Unit 以 Watchman 的权限更改指向的文件。

CVSS 7.8 · High EPSS 0.29% · P19
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I. Basic Information for CVE-2022-21944

Vulnerability Information
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Vulnerability Title
watchman: chown in watchman@.socket unit allows symlink attack
Source: CVE Program / CVE List V5
Vulnerability Description
A UNIX Symbolic Link (Symlink) Following vulnerability in the systemd service file for watchman of openSUSE Backports SLE-15-SP3, Factory allows local attackers to escalate to root. This issue affects: openSUSE Backports SLE-15-SP3 watchman versions prior to 4.9.0. openSUSE Factory watchman versions prior to 4.9.0-9.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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
SUSE Linux Enterprise Server 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
SUSE Linux Enterprise Server是德国SUSE公司的一套企业服务器版Linux操作系统。 SUSE Linux Enterprise Server (SLES) 存在安全漏洞，攻击者可以创建一个符号链接，以通过 Socket Unit 以 Watchman 的权限更改指向的文件。
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
openSUSE openSUSE Backports SLE-15-SP3 watchman ~ 4.9.0 -
openSUSE Factory watchman ~ 4.9.0-9.1 -

II. Public POCs for CVE-2022-21944

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III. Intelligence Information for CVE-2022-21944

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Vendor Advisories for CVE-2022-21944 (1)

IV. Related Vulnerabilities

Same product: openSUSE Backports SLE-15-SP3
Same vendor: openSUSE
Same weakness: CWE-59

V. Comments for CVE-2022-21944

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