{"schemaVersion":3,"id":"CVE-2020-28951","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"libuci in OpenWrt before 18.06.9 and 19.x before 19.07.5 may encounter a use after free when using malicious package names. This is related to uci_parse_package in file.c and uci_strdup in util.c.","dates":{"published":"2020-11-19T19:01:57.000Z","modified":"2024-08-04T16:48:00.501Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":10,"severity":"high","version":"2.0","versionLabel":"v2.0","source":"NVD","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","computed":false,"selection":"backend-summary"},"metrics":[{"version":"3.1","versionLabel":"v3.1","source":"NVD","score":9.8,"severity":"critical","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","exploitability":null,"impact":null,"computed":false},{"version":"2.0","versionLabel":"v2.0","source":"NVD","score":10,"severity":"high","vector":"AV:N/AC:L/Au:N/C:C/I:C/A:C","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.01778,"percentile":0.78029,"severity":"low","asOf":"2026-10-21T00:00:00.000Z","change":{"pp":0,"baselineDate":"2026-09-21T00:00:00.000Z","baselineScore":0.01778},"history":[{"date":"2026-09-14T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-15T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-16T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-17T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-18T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-19T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-20T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-21T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01778,"percentile":0.78029}],"last30":[{"date":"2026-09-21T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-22T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-23T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-24T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-25T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-26T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-27T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-28T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-29T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-09-30T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-01T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-02T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-03T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-04T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-05T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-06T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-07T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-08T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-09T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-10T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-11T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-12T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-13T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-14T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-15T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.01778,"percentile":null},{"date":"2026-10-21T00:00:00.000Z","score":0.01778,"percentile":0.78029}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-416","name":"Use After Free","description":"The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"openwrt","product":"openwrt","name":"openwrt","label":"openwrt","ecosystem":null,"cpePart":"o","purl":null,"purlType":null,"versions":[{"text":"< 18.06.9","noFixRecorded":false,"fixedIn":null},{"text":"≥ 19.07.0, < 19.07.5","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 18.06.9 | ≥ 19.07.0, < 19.07.5","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"openwrt","label":"OpenWrt","category":"os"}},"hubHref":"/vendor/openwrt/openwrt"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://git.openwrt.org/?p=project/uci.git%3Ba=commit%3Bh=a3e650911f5e6f67dcff09974df3775dfd615da6","label":"git.openwrt.org?p=project/uci.git%3Ba=commit%3Bh=a3e650911f5e6f67dcff09974df3775dfd615da6","hostname":"git.openwrt.org","tags":["X Refsource MISC"]},{"url":"https://git.openwrt.org/?p=openwrt/openwrt.git%3Ba=commit%3Bh=5625f5bc36954d644cb80adf8de47854c65d91c3","label":"git.openwrt.org?p=openwrt/openwrt.git%3Ba=commit%3Bh=5625f5bc36954d644cb80adf8de47854c65d91c3","hostname":"git.openwrt.org","tags":["X Refsource MISC"]},{"url":"https://git.openwrt.org/?p=openwrt/openwrt.git%3Ba=log%3Bh=refs/tags/v18.06.9","label":"git.openwrt.org?p=openwrt/openwrt.git%3Ba=log%3Bh=refs/tags/v18.06.9","hostname":"git.openwrt.org","tags":["X Refsource MISC"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2020-11-19T19:01:57.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2024-08-04T16:48:00.501Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T18:29:46.403Z","stale":false,"partial":false}}