{"id":"GHSA-g8vq-v3mg-7mrg","summary":"Redlib allows a Denial of Service via DEFLATE Decompression Bomb in restore_preferences Form","details":"A vulnerability has been identified in Redlib where an attacker can cause a denial-of-service (DOS) condition by submitting a specially crafted base2048-encoded DEFLATE decompression bomb to the restore_preferences form. This leads to excessive memory consumption and potential system instability, which can be exploited to disrupt Redlib instances. This vulnerability was introduced in 2e95e1fc6e2064ccfae87964b4860bda55eddb9a and fixed in 15147cea8e42f6569a11603d661d71122f6a02dc.\n\n### Impact\n_What kind of vulnerability is it? Who is impacted?_\n\nThis vulnerability allows a remote attacker with network access to exploit the preference restoration mechanism by providing a compressed payload that expands dramatically upon decompression. The issue arises because the system automatically decompresses user-supplied data without enforcing size limits, potentially leading to:\n\n- Out-of-memory (OOM) conditions\n- OS-level resource exhaustion, potentially leading to broader system instability or crashes\n- Repeated exploitation, keeping the target system in a persistent degraded state\n- Denial-of-service of any public instance\n\n### Patches\nThe problem has been patched in 15147cea8e42f6569a11603d661d71122f6a02dc. Users should upgrade to v0.36.0.\n\n### Workarounds\nUntil a patch is available, users can:\n\n- Implement request size limits at the web server or application level to reject excessively large inputs.\n- Disable or restrict the restore_preferences route (`/settings/encoded-restore`) at the reverse-proxy level if not required.\n- Monitor server logs for unusually large or repeated restore_preferences requests and block offending IPs.","aliases":["CVE-2025-30160"],"modified":"2025-03-21T15:26:55Z","published":"2025-03-21T15:26:55Z","database_specific":{"cwe_ids":["CWE-400","CWE-502"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2025-03-21T15:26:55Z","nvd_published_at":"2025-03-20T19:15:38Z"},"references":[{"type":"WEB","url":"https://github.com/crewjam/saml/security/advisories/GHSA-5mqj-xc49-246p"},{"type":"WEB","url":"https://github.com/redlib-org/redlib/security/advisories/GHSA-g8vq-v3mg-7mrg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30160"},{"type":"WEB","url":"https://github.com/redlib-org/redlib/commit/15147cea8e42f6569a11603d661d71122f6a02dc"},{"type":"WEB","url":"https://github.com/redlib-org/redlib/commit/2e95e1fc6e2064ccfae87964b4860bda55eddb9a"},{"type":"PACKAGE","url":"https://github.com/redlib-org/redlib"}],"affected":[{"package":{"name":"redlib","ecosystem":"crates.io","purl":"pkg:cargo/redlib"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.36.0"}]}],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2025/03/GHSA-g8vq-v3mg-7mrg/GHSA-g8vq-v3mg-7mrg.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}