{"id":"CVE-2020-4068","published":"2020-06-22T15:30:17Z","modified":"2024-08-04T07:52:20Z","title":"Heap-based Buffer Overflow in APNSwift","vendor":"kylebrowning","product":"APNSwift","tier":"core","eol":null,"affectedVersions":[{"vendor":"kylebrowning","product":"APNSwift","versions":["= 1.0.0"]}],"description":{"text":"In APNSwift 1.0.0, calling APNSwiftSigner.sign(digest:) is likely to result in a heap buffer overflow. This has been fixed in 1.0.1.","provenance":"source","from":"CVE.org"},"summary":null,"cvss":{"score":6.3,"severity":"MEDIUM","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L","provenance":"source","from":"CVE.org CNA"},"epss":{"score":0.01316,"percentile":0.707,"date":"2026-10-29","provenance":"source"},"kev":null,"vulncheckKev":null,"exploited":false,"otx":{"pulseCount":0,"pulses":[],"provenance":"machine"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"references":[{"url":"https://github.com/kylebrowning/APNSwift/security/advisories/GHSA-qh2w-vjxg-mjcg","tags":["x_refsource_CONFIRM"]},{"url":"https://github.com/kylebrowning/APNSwift/issues/31","tags":["x_refsource_MISC"]},{"url":"https://github.com/kylebrowning/APNSwift/pull/32","tags":["x_refsource_MISC"]},{"url":"https://github.com/kylebrowning/APNSwift/commit/97fa7f69dcdd89168fff84e0ba8f999881ee3d3f","tags":["x_refsource_MISC"]}],"techniques":[{"id":"T1091","name":"Replication Through Removable Media","tactics":["initial-access","lateral-movement"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"high"},{"id":"T1133","name":"External Remote Services","tactics":["initial-access","persistence"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"high"},{"id":"T1189","name":"Drive-by Compromise","tactics":["initial-access"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"low","confidenceNote":"server-side bug exploitable without user interaction; client-execution technique does not fit"},{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"high"},{"id":"T1204.002","name":"Malicious File","tactics":["execution"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"low","confidenceNote":"server-side bug exploitable without user interaction; client-execution technique does not fit"},{"id":"T1566","name":"Phishing","tactics":["initial-access"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"exploitation_technique","evidence":[],"confidence":"high"},{"id":"T1499.004","name":"Application or System Exploitation","tactics":["impact"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"primary_impact","evidence":[],"confidence":"high"},{"id":"T1574","name":"Hijack Execution Flow","tactics":["execution","stealth"],"provenance":"source","basis":"ctid-cve","bases":["ctid-cve"],"basisDetail":"CTID attack_to_cve (Phase 2)","mappingType":"primary_impact","evidence":[],"confidence":"high"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2020-25320","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-25320","exploited":false,"exploitedSince":null,"provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":[],"flow":[{"stage":"exploitation","techniques":["T1091","T1133","T1190","T1566"],"provenance":"source"},{"stage":"primary","techniques":["T1574","T1499.004"],"provenance":"source"},{"stage":"related","techniques":["T1189","T1204.002"],"provenance":"source","lowConfidence":true}],"timeline":[{"date":"2020-06-22","kind":"published","label":"Published (CVE.org)","url":"https://www.cve.org/CVERecord?id=CVE-2020-4068","provenance":"source"}],"speed":{"daysToPublicExploit":null,"firstExploitFrom":null,"daysToKev":null},"priority":{"score":18.5,"factors":[{"name":"In a KEV catalog","points":0.0,"detail":"not listed"},{"name":"Recent KEV listing","points":0.0,"detail":"not listed"},{"name":"Known ransomware use","points":0.0,"detail":"not known"},{"name":"EPSS percentile","points":14.14,"detail":"percentile 0.7070"},{"name":"Named in threat reports","points":0.0,"detail":"0 reports"},{"name":"Public exploit code","points":0.0,"detail":"none found"},{"name":"Mentioned in OTX pulses","points":0.0,"detail":"0 pulses"},{"name":"CVSS severity","points":4.41,"detail":"base score 6.3"},{"name":"End-of-life product","points":0.0,"detail":"supported or unknown"}]}}