CVE-2018-1061

MEDIUM

Python < 2.7.15 - Improper Input Validation

Title source: rule

Description

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.

References (21)

[Mailing List] http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html

[Third Party Advisory, VDB Entry] http://www.securitytracker.com/id/1042001

[Third Party Advisory] https://access.redhat.com/errata/RHBA-2019:0327

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2018:3041

[Third Party Advisory] https://access.redhat.com/errata/RHSA-2018:3505

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2019:1260

[Vendor Advisory] https://access.redhat.com/errata/RHSA-2019:3725

[Vendor Advisory] https://bugs.python.org/issue32981

[Issue Tracking] https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061

[Vendor Advisory] https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1

[Vendor Advisory] https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html

[Mailing List, Third Party Advisory] https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html

[Vendor Advisory] https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us

[Third Party Advisory] https://usn.ubuntu.com/3817-1/

[Third Party Advisory] https://usn.ubuntu.com/3817-2/

[Third Party Advisory] https://www.debian.org/security/2018/dsa-4306

[Third Party Advisory] https://www.debian.org/security/2018/dsa-4307

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/

[Mailing List, Third Party Advisory] https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/

... and 1 more

Scores

CVSS v3 6.5

EPSS 0.0165

EPSS Percentile 81.8%

Attack Vector NETWORK

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Classification

CWE

CWE-20

Status published

Affected Products (24)

python/python

python/python < 2.7.15

python/python

debian/debian_linux

redhat/ansible_tower

redhat/enterprise_linux_desktop

... and 9 more

Timeline

Published Jun 19, 2018

Tracked Since Feb 18, 2026