CVE-2020-15229— Singularity 路径遍历漏洞
一分钟漏洞结论
影响对象
hpcng singularity
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
Singularity是Singularity 团队（Singularity）的一个开源的容器管理平台。该软件支持在其桌面上构建应用程序，并在任何公共云上或在计算边缘运行数百或数千个实例。 Singularity 3.1.1版本至3.6.3版本存在安全漏洞，该漏洞源于对路径遍历的处理不安全，并且在unsquashfs中缺少路径清理。攻击者可利用该漏洞squashfs文件系统覆盖/创建主机文件系统上的任何文件。
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一、 漏洞 CVE-2020-15229 基础信息
漏洞信息
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Vulnerability Title
Path traversal and files overwrite with unsquashfs
来源: CVE Program / CVE List V5
Vulnerability Description
Singularity (an open source container platform) from version 3.1.1 through 3.6.3 has a vulnerability. Due to insecure handling of path traversal and the lack of path sanitization within `unsquashfs`, it is possible to overwrite/create any files on the host filesystem during the extraction with a crafted squashfs filesystem. The extraction occurs automatically for unprivileged (either installation or with `allow setuid = no`) run of Singularity when a user attempt to run an image which is a local SIF image or a single file containing a squashfs filesystem and is coming from remote sources `library://` or `shub://`. Image build is also impacted in a more serious way as it can be used by a root user, allowing an attacker to overwrite/create files leading to a system compromise, so far bootstrap methods `library`, `shub` and `localimage` are triggering the squashfs extraction. This issue is addressed in Singularity 3.6.4. All users are advised to upgrade to 3.6.4 especially if they use Singularity mainly for building image as root user. There is no solid workaround except to temporary avoid to use unprivileged mode with single file images in favor of sandbox images instead. Regarding image build, temporary avoid to build from `library` and `shub` sources and as much as possible use `--fakeroot` or a VM for that.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
来源: CVE Program / CVE List V5
Vulnerability Type
对路径名的限制不恰当(路径遍历)
来源: CVE Program / CVE List V5
Vulnerability Title
Singularity 路径遍历漏洞
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Description
Singularity是Singularity 团队（Singularity）的一个开源的容器管理平台。该软件支持在其桌面上构建应用程序，并在任何公共云上或在计算边缘运行数百或数千个实例。 Singularity 3.1.1版本至3.6.3版本存在安全漏洞，该漏洞源于对路径遍历的处理不安全，并且在unsquashfs中缺少路径清理。攻击者可利用该漏洞squashfs文件系统覆盖/创建主机文件系统上的任何文件。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
| 厂商 | 产品 | 影响版本 | CPE | 订阅 |
|---|---|---|---|---|
| hpcng | singularity | < 3.6.4 | - |
|
二、漏洞 CVE-2020-15229 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2020-15229 补丁与修复 (2)
-
https://github.com/hpcng/singularity/pull/5611 x_refsource_MISC
CVE-2020-15229 厂商安全公告 (1)
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https://github.com/hpcng/singularity/security/advisories/GHSA-7gcp-w6ww-2xv9 x_refsource_CONFIRM
CVE-2020-15229 邮件列表归档 (3)
-
http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00071.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00070.html vendor-advisory x_refsource_SUSE
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http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00009.html vendor-advisory x_refsource_SUSE
CVE-2020-15229 其他参考 (1)
IV. Related Vulnerabilities
Same weakness: CWE-22
-
CVE-2026-50619
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CVE-2026-34015
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CVE-2026-26243
Arbitrary Folder Deletion in Qsync Central 5.0.0.5 -
CVE-2026-41544
Path Traversal leading to Arbitrary File Move, Docker Escape -
CVE-2026-24718
Path Traversal Vulnerability in Qsync Central's qsyncsrv.cgi
V. Comments for CVE-2020-15229
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