{"api_version":"1","generated_at":"2026-04-24T01:56:52+00:00","cve":"CVE-2015-6525","urls":{"html":"https://cve.report/CVE-2015-6525","api":"https://cve.report/api/cve/CVE-2015-6525.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2015-6525","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2015-6525"},"summary":{"title":"CVE-2015-6525","description":"Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.","state":"PUBLIC","assigner":"cve@mitre.org","published_at":"2015-08-24 14:59:00","updated_at":"2015-08-26 02:56:00"},"problem_types":["CWE-189"],"metrics":[],"references":[{"url":"http://archives.seul.org/libevent/users/Jan-2015/msg00010.html","name":"[Libevent-users] 20150105 Advisory: integer overflow in evbuffers for Libevent <= 1.4.14b,2.0.21,2.1.4-alpha [CVE-2014-6272]","refsource":"MLIST","tags":["Vendor Advisory"],"title":"[Libevent-users] Advisory: integer overflow in evbuffers for Libevent <= 1.4.14b,2.0.21,2.1.4-alpha [CVE-2014-6272]","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.debian.org/security/2015/dsa-3119","name":"DSA-3119","refsource":"DEBIAN","tags":[],"title":"Debian -- Security Information -- DSA-3119-1 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integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"[Libevent-users] 20150105 Advisory: integer overflow in evbuffers for Libevent <= 1.4.14b,2.0.21,2.1.4-alpha [CVE-2014-6272]","refsource":"MLIST","url":"http://archives.seul.org/libevent/users/Jan-2015/msg00010.html"},{"name":"DSA-3119","refsource":"DEBIAN","url":"http://www.debian.org/security/2015/dsa-3119"}]}},"nvd":{"publishedDate":"2015-08-24 14:59:00","lastModifiedDate":"2015-08-26 02:56:00","problem_types":["CWE-189"],"metrics":{"baseMetricV2":{"cvssV2":{"version":"2.0","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","accessVector":"NETWORK","accessComplexity":"LOW","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","availabilityImpact":"PARTIAL","baseScore":7.5},"severity":"HIGH","exploitabilityScore":10,"impactScore":6.4,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}},"configurations":{"CVE_data_version":"4.0","nodes":[{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:o:debian:debian_linux:7.1:*:*:*:*:*:*:*","cpe_name":[]}]},{"operator":"OR","children":[],"cpe_match":[{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.5:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.20:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.7:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.19:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.8:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.18:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.12:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.1.4:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.6:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.3:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.10:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.9:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.1.3:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.1.2:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.4:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.15:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.17:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.1.1:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.14:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.1:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.13:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.11:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.2:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.16:*:*:*:*:*:*:*","cpe_name":[]},{"vulnerable":true,"cpe23Uri":"cpe:2.3:a:libevent_project:libevent:2.0.21:*:*:*:*:*:*:*","cpe_name":[]}]}]}},"legacy_mitre":{"record":{"CveYear":"2015","CveId":"6525","Ordinal":"83526","Title":"CVE-2015-6525","CVE":"CVE-2015-6525","Year":"2015"},"notes":[{"CveYear":"2015","CveId":"6525","Ordinal":"1","NoteData":"Multiple integer overflows in the evbuffer API in Libevent 2.0.x before 2.0.22 and 2.1.x before 2.1.5-beta allow context-dependent attackers to cause a denial of service or possibly have other unspecified impact via \"insanely large inputs\" to the (1) evbuffer_add, (2) evbuffer_prepend, (3) evbuffer_expand, (4) exbuffer_reserve_space, or (5) evbuffer_read function, which triggers a heap-based buffer overflow or an infinite loop.  NOTE: this identifier was SPLIT from CVE-2014-6272 per ADT3 due to different affected versions.","Type":"Description","Title":null},{"CveYear":"2015","CveId":"6525","Ordinal":"2","NoteData":"2015-08-24","Type":"Other","Title":"Published"},{"CveYear":"2015","CveId":"6525","Ordinal":"3","NoteData":"2015-08-24","Type":"Other","Title":"Modified"}]}}}