{"id":"GHSA-9mc5-7qhg-fp3w","summary":"Below has Incorrect Permission Assignment for Critical Resource","details":"### Impact\nA privilege escalation vulnerability existed in the Below service prior to v0.9.0 due to the creation of a world-writable directory at /var/log/below. This could have allowed local unprivileged users to escalate to root privileges through symlink attacks that manipulate files such as /etc/shadow.\n\n### Patches\nhttps://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83\n\nThis is included in version 0.9.0\n\n### Workarounds\nChange the permission on `/var/log/below` manually\n\n### References\nhttps://www.facebook.com/security/advisories/cve-2025-27591\nhttps://www.cve.org/CVERecord?id=CVE-2025-27591","aliases":["CVE-2025-27591","RUSTSEC-2025-0149"],"modified":"2026-02-08T01:20:45.748583Z","published":"2025-03-11T21:12:54Z","database_specific":{"nvd_published_at":"2025-03-11T19:15:43Z","cwe_ids":["CWE-732"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2025-03-11T21:12:54Z"},"references":[{"type":"WEB","url":"https://github.com/facebookincubator/below/security/advisories/GHSA-9mc5-7qhg-fp3w"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-27591"},{"type":"WEB","url":"https://github.com/facebookincubator/below/commit/10e73a21d67baa2cd613ee92ce999cda145e1a83"},{"type":"WEB","url":"https://github.com/facebookincubator/below/commit/da9382e6e3e332fd2c3195e22f34977f83f0f1f3"},{"type":"PACKAGE","url":"https://github.com/facebookincubator/below"},{"type":"WEB","url":"https://rustsec.org/advisories/RUSTSEC-2025-0149.html"},{"type":"WEB","url":"https://www.facebook.com/security/advisories/cve-2025-27591"},{"type":"WEB","url":"https://www.openwall.com/lists/oss-security/2025/03/12/1"},{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/03/12/1"}],"affected":[{"package":{"name":"below","ecosystem":"crates.io","purl":"pkg:cargo/below"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.9.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-9mc5-7qhg-fp3w/GHSA-9mc5-7qhg-fp3w.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}]}