{"id":"PSF-2016-7","summary":"zipimporter overflow","details":"Integer overflow in the get_data function in zipimport.c in CPython (aka Python) before 2.7.12, 3.x before 3.4.5, and 3.5.x before 3.5.2 allows remote attackers to have unspecified impact via a negative data size value, which triggers a heap-based buffer overflow.","aliases":["CVE-2016-5636"],"modified":"2026-05-18T23:09:56.119018Z","published":"2016-09-02T14:00:00Z","database_specific":{"cwe_ids":[]},"references":[{"type":"REPORT","url":"https://bugs.python.org/issue26171"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"64ea192b73e39e877d8b39ce6584fa580eb0e9b4"},{"fixed":"d751040b1a4e35fd3b01fc919cd8f9374ed714fd"}]}],"versions":["v2.7.11rc1","v2.7.10rc1","v2.7.9rc1","v3.3.6","v3.3.6rc1","v2.7.8","v3.3.5rc2","v3.3.3rc1","v2.7.6rc1","v3.3.2","v2.7.5","v2.7.4rc1","v3.3.0","v3.3.0rc3","v3.3.0rc2","v3.3.0rc1","v3.3.0b2","v3.3.0b1","v3.3.0a4","v3.3.0a3","v3.3.0a2","v2.7.3rc1","v2.7.2rc1","v2.7","v3.2rc3","v3.2rc2","v3.2rc1","v3.2b2","v3.2b1","v2.7.1","v2.7.1rc1","v3.2a4","v3.2a3","v3.2a2","v3.2a1","v2.7rc2","v2.7rc1","v2.7b2","v2.7b1","v2.7a4","v2.7a3","v2.7a2","v2.7a1","v3.1","v3.1rc2","v3.1rc1","v3.1b1","v3.1a2","v3.1a1","v3.0rc3","v3.0rc2","v2.6","v2.6rc2","v3.0rc1","v2.6rc1","v3.0b3","v2.6b3","v2.6b2","v3.0b2","v2.6b1","v3.0b1","v2.6a3","v3.0a5","v2.6a2","v3.0a4","v3.0a3","v2.6a1","v3.0a2","v3.0a1","v2.5b3","v2.5b2","v2.5b1","v2.5a2","v2.5a1","v2.5a0","v2.4","v2.4c1","v2.4b2","v2.4b1","v2.4a3","v2.4a2","v2.4a1","v2.3c2","v2.3c1","v2.2a3","v2.1","v2.1c2","v2.1c1","v2.1b2","v2.1b1","v2.1a2","v2.1a1","v2.0","v2.0c1","v2.0b2","v2.0b1","v1.6a2","v1.6a1","v1.5.2","v1.5.2c1","v1.5.2b2","v1.5.2b1","v1.5.2a2","v1.5.2a1","v1.5.1","v1.5","v1.5b2","v1.5b1","v1.5a4","v1.5a3","v1.5a2","v1.5a1","v1.4","v1.4b3","v1.4b2","v1.4b1","v1.3","v1.3b1","v1.2","v1.2b4","v1.2b3","v1.2b2","v1.2b1","v1.1.1","v1.1","v1.0.2","v1.0.1","v0.9.9","v0.9.8"],"database_specific":{"vanir_signatures":[{"deprecated":false,"digest":{"function_hash":"313645478689508232317534734015673937870","length":1980},"id":"PSF-2016-7-07eb1964","signature_type":"Function","signature_version":"v1","source":"https://github.com/python/cpython/commit/d751040b1a4e35fd3b01fc919cd8f9374ed714fd","target":{"file":"Modules/zipimport.c","function":"get_data"}},{"digest":{"line_hashes":["141314266699022732687104474145858926350","58932469579152330604121716034541420257","293715085738001166973387474142203612408"],"threshold":0.9},"id":"PSF-2016-7-3084b8eb","signature_type":"Line","signature_version":"v1","source":"https://github.com/python/cpython/commit/d751040b1a4e35fd3b01fc919cd8f9374ed714fd","target":{"file":"Modules/zipimport.c"},"deprecated":false},{"deprecated":false,"digest":{"line_hashes":["167474003122500294144509576708096792733","51597762786976815965554609765896405356","305550384080879515257579669516704359939"],"threshold":0.9},"id":"PSF-2016-7-7551afbf","signature_type":"Line","signature_version":"v1","source":"https://github.com/python/cpython/commit/64ea192b73e39e877d8b39ce6584fa580eb0e9b4","target":{"file":"Modules/zipimport.c"}},{"id":"PSF-2016-7-e9c42eae","signature_type":"Function","signature_version":"v1","source":"https://github.com/python/cpython/commit/64ea192b73e39e877d8b39ce6584fa580eb0e9b4","target":{"file":"Modules/zipimport.c","function":"get_data"},"deprecated":false,"digest":{"function_hash":"298246660755263030412569911436894744812","length":1880}}],"source":"https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2016-7.json","vanir_signatures_modified":"2026-05-18T23:09:56Z"}}],"schema_version":"1.7.5"}