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CVE-2019-18837

Quick assessment

Affected
crun crun
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.

crun是一款使用C语言编写的OCI（开放容器倡议）容器运行时库。 crun 0.10.5之前版本中存在后置链接漏洞。攻击者可利用该漏洞获取容器外部的文件。

AI Predicted 8.6 Difficulty: Easy EPSS 1.43% · P72

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2019-18837

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in crun before 0.10.5. With a crafted image, it doesn't correctly check whether a target is a symlink, resulting in access to files outside of the container. This occurs in libcrun/linux.c and libcrun/chroot_realpath.c.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
crun 后置链接漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
crun是一款使用C语言编写的OCI（开放容器倡议）容器运行时库。 crun 0.10.5之前版本中存在后置链接漏洞。攻击者可利用该漏洞获取容器外部的文件。
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
crun crun before 0.10.5 -

II. Public POCs for CVE-2019-18837

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III. Intelligence Information for CVE-2019-18837

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Patches & Fixes for CVE-2019-18837 (1)

Mailing List Discussions for CVE-2019-18837 (2)

Other References for CVE-2019-18837 (1)

IV. Related Vulnerabilities

Same product: crun

V. Comments for CVE-2019-18837

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