{"url":"http://public2.vulnerablecode.io/api/packages/1007273?format=json","purl":"pkg:apk/alpine/singularity@3.6.4-r0?arch=aarch64&distroversion=v3.20&reponame=community","type":"apk","namespace":"alpine","name":"singularity","version":"3.6.4-r0","qualifiers":{"arch":"aarch64","distroversion":"v3.20","reponame":"community"},"subpath":"","is_vulnerable":false,"next_non_vulnerable_version":"3.7.3-r0","latest_non_vulnerable_version":"4.1.1-r0","affected_by_vulnerabilities":[],"fixing_vulnerabilities":[{"url":"http://public2.vulnerablecode.io/api/vulnerabilities/48516?format=json","vulnerability_id":"VCID-qz7w-3qvp-ykan","summary":"Path traversal and files overwrite with unsquashfs in singularity\n### Impact\n\nDue to insecure handling of path traversal and the lack of path sanitization within `unsquashfs` (a distribution provided utility used by Singularity), it is possible to overwrite/create any files on the host filesystem during the extraction of a crafted squashfs filesystem.\n\nSquashfs extraction occurs automatically for unprivileged execution of Singularity (either `--without-suid` installation or with `allow setuid = no`) when a user attempts to run an image which:\n\n- is a local SIF image or a single file containing a squashfs filesystem\n- is pulled from remote sources `library://` or `shub://`\n\nImage build is also impacted in a more serious way as it is often performed by the root user, allowing an attacker to overwrite/create files leading to a system compromise.  Bootstrap methods `library`, `shub` and `localimage` trigger a squashfs extraction.\n\n### Patches\n\nThis issue is addressed in Singularity 3.6.4.\n\nAll users are advised to upgrade to 3.6.4 especially if they use Singularity mainly for building image as root user.\n\n### Workarounds\n\nThere is no solid workaround except to temporarily avoid use of unprivileged mode with single file images, in favor of sandbox images instead. Regarding image build, temporarily avoid building from `library` and `shub` sources, and as much as possible use `--fakeroot` or a VM to limit potential impact.\n\n### For more information\n\nGeneral questions about the impact of the advisory / changes made in the 3.6.0 release can be asked in the:\n\n* [Singularity Slack Channel](https://bit.ly/2m0g3lX)\n* [Singularity Mailing List](https://groups.google.com/a/lbl.gov/forum/??sdf%7Csort:date#!forum/singularity)\n\nAny sensitive security concerns should be directed to: security@sylabs.io\n\nSee our Security Policy here: https://sylabs.io/security-policy","references":[{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00070.html","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00070.html"},{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00071.html","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00071.html"},{"reference_url":"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00009.html","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00009.html"},{"reference_url":"https://api.first.org/data/v1/epss?cve=CVE-2020-15229","reference_id":"","reference_type":"","scores":[{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75377","published_at":"2026-04-29T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75298","published_at":"2026-04-08T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75309","published_at":"2026-04-09T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.7533","published_at":"2026-04-11T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75308","published_at":"2026-04-12T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75297","published_at":"2026-04-13T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75336","published_at":"2026-04-16T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75343","published_at":"2026-04-18T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75333","published_at":"2026-04-21T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75368","published_at":"2026-04-24T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75373","published_at":"2026-04-26T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75243","published_at":"2026-04-01T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75246","published_at":"2026-04-02T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75278","published_at":"2026-04-04T12:55:00Z"},{"value":"0.00876","scoring_system":"epss","scoring_elements":"0.75255","published_at":"2026-04-07T12:55:00Z"}],"url":"https://api.first.org/data/v1/epss?cve=CVE-2020-15229"},{"reference_url":"https://github.com/hpcng/singularity/blob/v3.6.4/CHANGELOG.md#security-related-fixes","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/hpcng/singularity/blob/v3.6.4/CHANGELOG.md#security-related-fixes"},{"reference_url":"https://github.com/hpcng/singularity/commit/eba3dea260b117198fdb6faf41f2482ab2f8d53e","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/hpcng/singularity/commit/eba3dea260b117198fdb6faf41f2482ab2f8d53e"},{"reference_url":"https://github.com/hpcng/singularity/pull/5611","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/hpcng/singularity/pull/5611"},{"reference_url":"https://github.com/hpcng/singularity/security/advisories/GHSA-7gcp-w6ww-2xv9","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://github.com/hpcng/singularity/security/advisories/GHSA-7gcp-w6ww-2xv9"},{"reference_url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15229","reference_id":"","reference_type":"","scores":[{"value":"8.2","scoring_system":"cvssv3.1","scoring_elements":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"},{"value":"HIGH","scoring_system":"generic_textual","scoring_elements":""}],"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-15229"},{"reference_url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972212","reference_id":"972212","reference_type":"","scores":[],"url":"https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=972212"}],"fixed_packages":[{"url":"http://public2.vulnerablecode.io/api/packages/1007273?format=json","purl":"pkg:apk/alpine/singularity@3.6.4-r0?arch=aarch64&distroversion=v3.20&reponame=community","is_vulnerable":false,"affected_by_vulnerabilities":[],"resource_url":"http://public2.vulnerablecode.io/packages/pkg:apk/alpine/singularity@3.6.4-r0%3Farch=aarch64&distroversion=v3.20&reponame=community"}],"aliases":["CVE-2020-15229","GHSA-7gcp-w6ww-2xv9"],"risk_score":null,"exploitability":null,"weighted_severity":null,"resource_url":"http://public2.vulnerablecode.io/vulnerabilities/VCID-qz7w-3qvp-ykan"}],"risk_score":null,"resource_url":"http://public2.vulnerablecode.io/packages/pkg:apk/alpine/singularity@3.6.4-r0%3Farch=aarch64&distroversion=v3.20&reponame=community"}