{"items":[{"id":"NVI-00011877","kind":"vulnerability","title":"pbkdf2 rehashes long passwords on every iteration, enabling denial of service","revision":2,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-477h-4r7f-fvrx","CVE-2026-102414"],"plain_summary":"GitHub lists this reviewed advisory for pbkdf2. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-48ee0421ad725b3561a03da4b3fbfe63"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-06T13:40:10.000Z","value":"3.7 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4d73e3af1357cebfc52303e3ee5d540f"},{"kind":"EPSS","as_of":"2026-10-31T12:00:27.000Z","value":"0.345%","meaning":"FIRST EPSS model v2026.06.15; exploitation probability over 30 days, percentile 0.28053. Missing scores are unknown.","source_id":"sr-48ee0421ad725b3561a03da4b3fbfe63"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4d73e3af1357cebfc52303e3ee5d540f","url":"https://github.com/advisories/GHSA-477h-4r7f-fvrx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-477h-4r7f-fvrx","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:59:16.959Z"},{"id":"sr-48ee0421ad725b3561a03da4b3fbfe63","url":"https://www.first.org/epss/data.html","basis":"official_catalog","notes":"FIRST EPSS; probability of exploitation in the next 30 days, not local compromise. Dataset date/model retained; FIRST services terms apply.","title":"CVE-2026-102414","publisher":"FIRST EPSS","observed_at":"2026-11-01T01:39:43.063Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4d73e3af1357cebfc52303e3ee5d540f"],"technology":"pbkdf2","known_exclusions":[],"conditions_summary":"### Summary\nThis is the same bug as Django had (CVE-2013-1443).\n\n### Details\nA long password can cause a DoS because it is not using cached HMAC, length limits, or pre-hashing passwords longer than the block size of the hash function as per HMAC spec. This line of code hashes the full password each iteration: https://github.com/browserify/pbkdf2/blob/1c3b1f526b052a29b3b42120c9821895772df7e8/lib/sync.js#L60\n\nAlso see https://github.com/browserify/pbkdf2/issues/82\n\n### PoC\nThe first key will take a lot longer to generate when not using the native code and uses code from `/lib/sync.js` (ie when this if statement is true):\nhttps://github.com/browserify/pbkdf2/blob/1c3b1f526b052a29b3b42120c9821895772df7e8/index.js#L33-L37\n\n```js\nvar pbkdf2 = require('pbkdf2');\nvar createHash = require('create-hash');\nvar pw = \".\".repeat(1048576); // 1 MiB\n\nvar t0 = performance.now();\nvar key1 = pbkdf2.pbkdf2Sync(pw, \"salt\", 1000, 32, \"sha256\");\nvar t1 = performance.now();\npw = createHash('sha256').update(pw).digest(); // HMAC specification for keys larger than block size\nvar key2 = pbkdf2.pbkdf2Sync(pw, \"salt\", 1000, 32, \"sha256\");\nvar t2 = performance.now();\n\nconsole.log(\"First took:  \" + (t1 - t0));\nc","public_affected_ranges":["<= 3.1.6"]}],"null_published_at":"2026-11-01T22:58:19.124Z","source_updated_at":"2026-10-06T13:40:10.000Z","source_disclosed_at":"2026-10-06T13:40:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"Dated EPSS estimate updated; this is not a new disclosure or proof of exploitation.","null_first_observed_at":"2026-11-01T00:59:16.959Z"},{"id":"NVI-00011877","kind":"vulnerability","title":"pbkdf2 rehashes long passwords on every iteration, enabling denial of service","revision":1,"unknowns":["Customer inventory, deployment, reachability and exploitation have not been inspected."],"lifecycle":"active","identifiers":["GHSA-477h-4r7f-fvrx","CVE-2026-102414"],"plain_summary":"GitHub lists this reviewed advisory for pbkdf2. Published version ranges and source prerequisites are shown below; this is not an inspection of a visitor’s application.","review_status":"source_listed","control_topics":[],"public_actions":[{"summary":"Identify the exact component and deployed version, examine the linked publisher’s conditions, and retain evidence of any mitigation.","source_ids":["sr-4d73e3af1357cebfc52303e3ee5d540f"],"action_type":"investigate","limitations":"Confirm current vendor support, compatibility and deployment evidence. This report has not tested a fix in your system.","current_supported_target":null}],"schema_version":"1.1.0","source_metrics":[{"kind":"CVSS","as_of":"2026-10-06T13:40:10.000Z","value":"3.7 medium","meaning":"GitHub source severity; exploitability and local consequence require separate evidence.","source_id":"sr-4d73e3af1357cebfc52303e3ee5d540f"}],"why_it_matters":"Published affected context helps an owner decide what evidence to gather. This report has not examined your application.","related_sources":[{"id":"sr-4d73e3af1357cebfc52303e3ee5d540f","url":"https://github.com/advisories/GHSA-477h-4r7f-fvrx","basis":"vendor_advisory","notes":"GitHub Advisory Database; CC-BY-4.0. Each advisory links its original attribution. Null normalizes fields.","title":"GHSA-477h-4r7f-fvrx","publisher":"GitHub Advisory Database","observed_at":"2026-11-01T00:59:16.959Z"}],"affected_context":[{"certainty":"source_listed","source_ids":["sr-4d73e3af1357cebfc52303e3ee5d540f"],"technology":"pbkdf2","known_exclusions":[],"conditions_summary":"### Summary\nThis is the same bug as Django had (CVE-2013-1443).\n\n### Details\nA long password can cause a DoS because it is not using cached HMAC, length limits, or pre-hashing passwords longer than the block size of the hash function as per HMAC spec. This line of code hashes the full password each iteration: https://github.com/browserify/pbkdf2/blob/1c3b1f526b052a29b3b42120c9821895772df7e8/lib/sync.js#L60\n\nAlso see https://github.com/browserify/pbkdf2/issues/82\n\n### PoC\nThe first key will take a lot longer to generate when not using the native code and uses code from `/lib/sync.js` (ie when this if statement is true):\nhttps://github.com/browserify/pbkdf2/blob/1c3b1f526b052a29b3b42120c9821895772df7e8/index.js#L33-L37\n\n```js\nvar pbkdf2 = require('pbkdf2');\nvar createHash = require('create-hash');\nvar pw = \".\".repeat(1048576); // 1 MiB\n\nvar t0 = performance.now();\nvar key1 = pbkdf2.pbkdf2Sync(pw, \"salt\", 1000, 32, \"sha256\");\nvar t1 = performance.now();\npw = createHash('sha256').update(pw).digest(); // HMAC specification for keys larger than block size\nvar key2 = pbkdf2.pbkdf2Sync(pw, \"salt\", 1000, 32, \"sha256\");\nvar t2 = performance.now();\n\nconsole.log(\"First took:  \" + (t1 - t0));\nc","public_affected_ranges":["<= 3.1.6"]}],"null_published_at":"2026-11-01T01:03:56.612Z","source_updated_at":"2026-10-06T13:40:10.000Z","source_disclosed_at":"2026-10-06T13:40:10.000Z","is_synthetic_fixture":false,"null_last_reviewed_at":null,"public_change_summary":"First indexed by Null; source disclosure date is shown separately.","null_first_observed_at":"2026-11-01T00:59:16.959Z"}],"next_cursor":null,"snapshot_revision":"42594"}