{"id":"PSF-2011-2","summary":"urllib redirect","details":"The urllib and urllib2 modules in Python 2.x before 2.7.2 and 3.x before 3.2.1 process Location headers that specify redirection to file: URLs, which makes it easier for remote attackers to obtain sensitive information or cause a denial of service (resource consumption) via a crafted URL, as demonstrated by the file:///etc/passwd and file:///dev/zero URLs.","aliases":["CVE-2011-1521"],"modified":"2025-10-09T00:58:03.440585Z","published":"2011-05-24T23:00:00Z","database_specific":{"cwe_ids":[]},"references":[{"type":"REPORT","url":"https://bugs.python.org/issue11662"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"60a4a90c8dd2972eb4bb977e70835be9593cbbac"},{"fixed":"a119df91f33724f64e6bc1ecb484eeaa30ace014"}]}],"versions":["v0.9.8","v0.9.9","v1.0.1","v1.0.2","v1.1","v1.1.1","v1.2","v1.2b1","v1.2b2","v1.2b3","v1.2b4","v1.3","v1.3b1","v1.4","v1.4b1","v1.4b2","v1.4b3","v1.5","v1.5.1","v1.5.2","v1.5.2a1","v1.5.2a2","v1.5.2b1","v1.5.2b2","v1.5.2c1","v1.5a1","v1.5a2","v1.5a3","v1.5a4","v1.5b1","v1.5b2","v1.6a1","v1.6a2","v2.0","v2.0b1","v2.0b2","v2.0c1","v2.1","v2.1a1","v2.1a2","v2.1b1","v2.1b2","v2.1c1","v2.1c2","v2.2a3","v2.3c1","v2.3c2","v2.4","v2.4a1","v2.4a2","v2.4a3","v2.4b1","v2.4b2","v2.4c1","v2.5","v2.5.1","v2.5.1c1","v2.5.2","v2.5.2c1","v2.5.3","v2.5.3c1","v2.5.4","v2.5.5","v2.5.5c1","v2.5.5c2","v2.5a0","v2.5a1","v2.5a2","v2.5b1","v2.5b2","v2.5b3","v2.5c1","v2.5c2"],"database_specific":{"source":"https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2011-2.json"}}],"schema_version":"1.7.3"}