CVE-2020-27348— snapcraft may build snaps with incorrect LD_LIBRARY_PATH
Quick assessment
Affected
Canonical snapcraft
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.
Canonical Snapcraft是英国Canonical公司的一个Linux系统软件应用商店。 Snapcraft 存在代码问题漏洞，攻击者可利用该漏洞通过当前的目录路径搜索Snapcraft，以运行代码。
Possible ATT&CK Techniques 3 AI
T1055 · Process Injection T1068 · Exploitation for Privilege Escalation T1200 · Hardware Additions
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I. Basic Information for CVE-2020-27348
Vulnerability Information
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Vulnerability Title
snapcraft may build snaps with incorrect LD_LIBRARY_PATH
Source: CVE Program / CVE List V5
Vulnerability Description
In some conditions, a snap package built by snapcraft includes the current directory in LD_LIBRARY_PATH, allowing a malicious snap to gain code execution within the context of another snap if both plug the home interface or similar. This issue affects snapcraft versions prior to 4.4.4, prior to 2.43.1+16.04.1, and prior to 2.43.1+18.04.1.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
对搜索路径元素未加控制
Source: CVE Program / CVE List V5
Vulnerability Title
Canonical Snapcraft 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Canonical Snapcraft是英国Canonical公司的一个Linux系统软件应用商店。 Snapcraft 存在代码问题漏洞，攻击者可利用该漏洞通过当前的目录路径搜索Snapcraft，以运行代码。
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
II. Public POCs for CVE-2020-27348
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Patches & Fixes for CVE-2020-27348 (1)
-
https://github.com/snapcore/snapcraft/pull/3345 x_refsource_MISC
Vendor Advisories for CVE-2020-27348 (1)
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https://usn.ubuntu.com/usn/usn-4661-1 x_refsource_MISC
Other References for CVE-2020-27348 (1)
-
https://bugs.launchpad.net/bugs/1901572 x_refsource_MISC
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V. Comments for CVE-2020-27348
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