{"id":"ASB-A-242299736", "published":"2023-03-01T00:00:00Z", "modified":"2026-05-01T15:24:27.653932157Z", "aliases":["CVE-2023-20966", "A-242299736"], "details":"In inflate of inflate.c, there is a possible out of bounds write due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.", "affected":[{"package":{"name":"platform/external/zlib", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"13-next:0"}, {"fixed":"13-next:2023-03-01"}]}], "versions":["13-next"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/external/zlib/+/e754d32adb747041bdd27bd971d27fa6bc44108d"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-135dfe05", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/e754d32adb747041bdd27bd971d27fa6bc44108d", "target":{"file":"contrib/optimizations/inflate.c"}}, {"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-e7e5790c", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/e754d32adb747041bdd27bd971d27fa6bc44108d", "target":{"file":"inflate.c"}}]}}, {"package":{"name":"platform/external/zlib", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"11:0"}, {"fixed":"11:2023-03-01"}]}], "versions":["11"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/external/zlib/+/1c4806afd7ae034aa9f86df35d4341a0b175a90a"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-77f88dd7", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/1c4806afd7ae034aa9f86df35d4341a0b175a90a", "target":{"file":"contrib/optimizations/inflate.c"}}, {"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-fd5674b1", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/1c4806afd7ae034aa9f86df35d4341a0b175a90a", "target":{"file":"inflate.c"}}]}}, {"package":{"name":"platform/external/zlib", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"12:0"}, {"fixed":"12:2023-03-01"}]}], "versions":["12"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/external/zlib/+/172924248227e1da88a8e963c18dc6f38b725f7a"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-48403612", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/172924248227e1da88a8e963c18dc6f38b725f7a", "target":{"file":"contrib/optimizations/inflate.c"}}, {"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", 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"89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-65a7eba0", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/5abcd199d3375a20b650ce4b7f8a1bb84469cefd", "target":{"file":"inflate.c"}}, {"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-84a433ec", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/5abcd199d3375a20b650ce4b7f8a1bb84469cefd", "target":{"file":"contrib/optimizations/inflate.c"}}]}}, {"package":{"name":"platform/external/zlib", "ecosystem":"Android"}, "ranges":[{"type":"ECOSYSTEM", "events":[{"introduced":"13:0"}, {"fixed":"13:2023-03-01"}]}], "versions":["13"], "ecosystem_specific":{"fixes":["https://android.googlesource.com/platform/external/zlib/+/e5a6e35a651c42d3a813e24af1000a3163da8a1b"], "severity":"High", "spl":"2023-03-01", "types":["EoP"], "vanir_signatures":[{"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", "89021460256006972424927287623588351745", "257784892650917064621950304120855216852"], "threshold":0.9}, "id":"ASB-A-242299736-1bc72bde", "signature_type":"Line", "signature_version":"v1", "source":"https://android.googlesource.com/platform/external/zlib/+/e5a6e35a651c42d3a813e24af1000a3163da8a1b", "target":{"file":"contrib/optimizations/inflate.c"}}, {"deprecated":false, "digest":{"line_hashes":["158253382744967794372166426227829451328", "208646129568712116042670616434092925745", "267897132422978847766130599021982102399", 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