{"id":"CVE-2018-1061","details":"python before versions 2.7.15, 3.4.9, 3.5.6rc1, 3.6.5rc1 and 3.7.0 is vulnerable to catastrophic backtracking in the difflib.IS_LINE_JUNK method.  An attacker could use this flaw to cause denial of service.","aliases":["PSF-2018-4"],"modified":"2026-04-02T00:36:33.882342Z","published":"2018-06-19T12:29:00.220Z","related":["MGASA-2018-0256","MGASA-2018-0270","SUSE-SU-2018:2408-1","SUSE-SU-2018:2696-1","SUSE-SU-2018:3554-1","SUSE-SU-2018:3554-2","SUSE-SU-2020:0114-1","SUSE-SU-2020:0234-1","openSUSE-SU-2020:0086-1","openSUSE-SU-2024:11202-1","openSUSE-SU-2024:11284-1"],"references":[{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/"},{"type":"WEB","url":"http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/"},{"type":"WEB","url":"https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHBA-2019:0327"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4307"},{"type":"ADVISORY","url":"http://www.securitytracker.com/id/1042001"},{"type":"ADVISORY","url":"https://bugs.python.org/issue32981"},{"type":"ADVISORY","url":"https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1"},{"type":"ADVISORY","url":"https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3817-2/"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:1260"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2019:3725"},{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html"},{"type":"ADVISORY","url":"https://www.debian.org/security/2018/dsa-4306"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3041"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2018:3505"},{"type":"ADVISORY","url":"https://usn.ubuntu.com/3817-1/"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/python/cpython","events":[{"introduced":"0"},{"fixed":"ca079a3ea30098aff3197c559a0e32d42dda6d84"},{"introduced":"6046c5e0298c25515ea58abc8ab87f7413e3f743"},{"fixed":"0a5a5af9b6b47727c5ee3def4508dab312949075"},{"introduced":"2e789a1f1d84b343a996e8654590703b5fbdd441"},{"last_affected":"27657e7cea26548958518144d63200d7a2333d1c"},{"introduced":"8d999cbf4adea053be6dbb612b9844635c4dfb8e"},{"last_affected":"d48ecebad5ac78a1783e09b0d32c211d9754edf4"},{"introduced":"0"},{"last_affected":"dfad352267cee3ea581035622a7371bc3b235378"},{"introduced":"0"},{"last_affected":"bf9cccb2b54ad2c641ea78435a8618a6d251491e"}],"database_specific":{"versions":[{"introduced":"0"},{"fixed":"2.7.15"},{"introduced":"3.0"},{"fixed":"3.4.9"},{"introduced":"3.5.0"},{"last_affected":"3.5.5"},{"introduced":"3.6"},{"last_affected":"3.6.4"},{"introduced":"0"},{"last_affected":"3.7.0-rc1"},{"introduced":"0"},{"last_affected":"3.3"}]}}],"versions":["2.0","2.1","2.2","2.3","2.4","2.5","2.6","3.0","3.1","3.2","3.3","3.6","3.8","3.9","legacy-trunk","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","v2.0.1","v2.0.1c1","v2.0b1","v2.0b2","v2.0c1","v2.1","v2.1.1","v2.1.1c1","v2.1.2","v2.1.2c1","v2.1.3","v2.1a1","v2.1a2","v2.1b1","v2.1b2","v2.1c1","v2.1c2","v2.2","v2.2.1","v2.2.1c1","v2.2.1c2","v2.2.2","v2.2.2b1","v2.2.3","v2.2.3c1","v2.2a3","v2.3.1","v2.3.2","v2.3.2c1","v2.3.3","v2.3.3c1","v2.3.4","v2.3.4c1","v2.3.5","v2.3.5c1","v2.3.6","v2.3.6c1","v2.3.7","v2.3.7c1","v2.3c1","v2.3c2","v2.4","v2.4.1","v2.4.1c1","v2.4.1c2","v2.4.2","v2.4.2c1","v2.4.3","v2.4.3c1","v2.4.4","v2.4.4c1","v2.4.5","v2.4.5c1","v2.4.6","v2.4.6c1","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","v2.5.6","v2.5.6c1","v2.5a0","v2.5a1","v2.5a2","v2.5b1","v2.5b2","v2.5b3","v2.5c1","v2.5c2","v2.6","v2.6.1","v2.6.2","v2.6.2c1","v2.6.3","v2.6.3rc1","v2.6.4","v2.6.4rc1","v2.6.4rc2","v2.6.5","v2.6.5rc1","v2.6.5rc2","v2.6.6","v2.6.6rc1","v2.6.6rc2","v2.6.7","v2.6.8","v2.6.8rc1","v2.6.8rc2","v2.6.9","v2.6.9rc1","v2.6a1","v2.6a2","v2.6a3","v2.6b1","v2.6b2","v2.6b3","v2.6rc1","v2.6rc2","v2.7","v2.7.1","v2.7.10","v2.7.10rc1","v2.7.11","v2.7.11rc1","v2.7.12","v2.7.12rc1","v2.7.13","v2.7.13rc1","v2.7.14","v2.7.14rc1","v2.7.15rc1","v2.7.1rc1","v2.7.2","v2.7.2rc1","v2.7.3","v2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