{"id":"ALPINE-CVE-2021-3177","details":"Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely.","modified":"2025-12-03T22:48:37.429014Z","published":"2021-01-19T06:15:12.967Z","upstream":["CVE-2021-3177"],"references":[{"type":"ADVISORY","url":"https://security.alpinelinux.org/vuln/CVE-2021-3177"}],"affected":[{"package":{"name":"python3","ecosystem":"Alpine:v3.10","purl":"pkg:apk/alpine/python3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.7.7-r2"}]}],"versions":["3.1.3-r0","3.2.0-r0","3.2.3-r0","3.3.0-r0","3.3.2-r0","3.3.3-r0","3.3.4-r0","3.4.1-r0","3.4.2-r0","3.4.2-r1","3.4.3-r1","3.4.3-r2","3.5.0-r0","3.5.1-r0","3.5.1-r1","3.5.1-r2","3.5.1-r3","3.5.2-r0","3.5.2-r1","3.5.2-r10","3.5.2-r2","3.5.2-r3","3.5.2-r4","3.5.2-r5","3.5.2-r6","3.5.2-r7","3.5.2-r8","3.5.2-r9","3.6.0-r0","3.6.1-r0","3.6.1-r1","3.6.1-r2","3.6.1-r3","3.6.1-r4","3.6.2-r0","3.6.2-r1","3.6.2-r2","3.6.2-r3","3.6.3-r3","3.6.3-r4","3.6.3-r5","3.6.3-r6","3.6.3-r7","3.6.3-r8","3.6.3-r9","3.6.4-r0","3.6.4-r1","3.6.6-r0","3.6.6-r1","3.6.6-r2","3.6.6-r3","3.6.7-r0","3.6.8-r0","3.6.8-r1","3.6.8-r2","3.7.2-r0","3.7.3-r0","3.7.4-r0","3.7.5-r0","3.7.5-r1","3.7.7-r0","3.7.7-r1"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3177.json"}},{"package":{"name":"python3","ecosystem":"Alpine:v3.11","purl":"pkg:apk/alpine/python3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.2-r2"}]}],"versions":["3.1.3-r0","3.2.0-r0","3.2.3-r0","3.3.0-r0","3.3.2-r0","3.3.3-r0","3.3.4-r0","3.4.1-r0","3.4.2-r0","3.4.2-r1","3.4.3-r1","3.4.3-r2","3.5.0-r0","3.5.1-r0","3.5.1-r1","3.5.1-r2","3.5.1-r3","3.5.2-r0","3.5.2-r1","3.5.2-r10","3.5.2-r2","3.5.2-r3","3.5.2-r4","3.5.2-r5","3.5.2-r6","3.5.2-r7","3.5.2-r8","3.5.2-r9","3.6.0-r0","3.6.1-r0","3.6.1-r1","3.6.1-r2","3.6.1-r3","3.6.1-r4","3.6.2-r0","3.6.2-r1","3.6.2-r2","3.6.2-r3","3.6.3-r3","3.6.3-r4","3.6.3-r5","3.6.3-r6","3.6.3-r7","3.6.3-r8","3.6.3-r9","3.6.4-r0","3.6.4-r1","3.6.6-r0","3.6.6-r1","3.6.6-r2","3.6.6-r3","3.6.7-r0","3.6.8-r0","3.6.8-r1","3.6.8-r2","3.7.2-r0","3.7.3-r0","3.7.3-r1","3.7.4-r0","3.7.5-r0","3.7.5-r1","3.8.0-r0","3.8.1-r0","3.8.2-r0","3.8.2-r1"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3177.json"}},{"package":{"name":"python3","ecosystem":"Alpine:v3.12","purl":"pkg:apk/alpine/python3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.5-r1"}]}],"versions":["3.1.3-r0","3.2.0-r0","3.2.3-r0","3.3.0-r0","3.3.2-r0","3.3.3-r0","3.3.4-r0","3.4.1-r0","3.4.2-r0","3.4.2-r1","3.4.3-r1","3.4.3-r2","3.5.0-r0","3.5.1-r0","3.5.1-r1","3.5.1-r2","3.5.1-r3","3.5.2-r0","3.5.2-r1","3.5.2-r10","3.5.2-r2","3.5.2-r3","3.5.2-r4","3.5.2-r5","3.5.2-r6","3.5.2-r7","3.5.2-r8","3.5.2-r9","3.6.0-r0","3.6.1-r0","3.6.1-r1","3.6.1-r2","3.6.1-r3","3.6.1-r4","3.6.2-r0","3.6.2-r1","3.6.2-r2","3.6.2-r3","3.6.3-r3","3.6.3-r4","3.6.3-r5","3.6.3-r6","3.6.3-r7","3.6.3-r8","3.6.3-r9","3.6.4-r0","3.6.4-r1","3.6.6-r0","3.6.6-r1","3.6.6-r2","3.6.6-r3","3.6.7-r0","3.6.8-r0","3.6.8-r1","3.6.8-r2","3.7.2-r0","3.7.3-r0","3.7.3-r1","3.7.4-r0","3.7.5-r0","3.7.5-r1","3.8.0-r0","3.8.1-r0","3.8.1-r1","3.8.1-r2","3.8.1-r3","3.8.2-r0","3.8.2-r1","3.8.2-r2","3.8.2-r3","3.8.2-r4","3.8.2-r5","3.8.2-r6","3.8.2-r7","3.8.3-r0","3.8.4-r0","3.8.5-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3177.json"}},{"package":{"name":"python3","ecosystem":"Alpine:v3.13","purl":"pkg:apk/alpine/python3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.7-r1"}]}],"versions":["3.1.3-r0","3.2.0-r0","3.2.3-r0","3.3.0-r0","3.3.2-r0","3.3.3-r0","3.3.4-r0","3.4.1-r0","3.4.2-r0","3.4.2-r1","3.4.3-r1","3.4.3-r2","3.5.0-r0","3.5.1-r0","3.5.1-r1","3.5.1-r2","3.5.1-r3","3.5.2-r0","3.5.2-r1","3.5.2-r10","3.5.2-r2","3.5.2-r3","3.5.2-r4","3.5.2-r5","3.5.2-r6","3.5.2-r7","3.5.2-r8","3.5.2-r9","3.6.0-r0","3.6.1-r0","3.6.1-r1","3.6.1-r2","3.6.1-r3","3.6.1-r4","3.6.2-r0","3.6.2-r1","3.6.2-r2","3.6.2-r3","3.6.3-r3","3.6.3-r4","3.6.3-r5","3.6.3-r6","3.6.3-r7","3.6.3-r8","3.6.3-r9","3.6.4-r0","3.6.4-r1","3.6.6-r0","3.6.6-r1","3.6.6-r2","3.6.6-r3","3.6.7-r0","3.6.8-r0","3.6.8-r1","3.6.8-r2","3.7.2-r0","3.7.3-r0","3.7.3-r1","3.7.4-r0","3.7.5-r0","3.7.5-r1","3.8.0-r0","3.8.1-r0","3.8.1-r1","3.8.1-r2","3.8.1-r3","3.8.2-r0","3.8.2-r1","3.8.2-r2","3.8.2-r3","3.8.2-r4","3.8.2-r5","3.8.2-r6","3.8.2-r7","3.8.3-r0","3.8.4-r0","3.8.5-r0","3.8.5-r1","3.8.5-r2","3.8.6-r0","3.8.7-r0"],"ecosystem_specific":{},"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/alpine/ALPINE-CVE-2021-3177.json"}},{"package":{"name":"python3","ecosystem":"Alpine:v3.14","purl":"pkg:apk/alpine/python3?arch=source"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.8.7-r2"}]}],"versions":["3.1.3-r0","3.2.0-r0","3.2.3-r0","3.3.0-r0","3.3.2-r0","3.3.3-r0","3.3.4-r0","3.4.1-r0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