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.

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-1519-1 python2.7 security update
Debian DLA Debian DLA DLA-1520-1 python3.4 security update
Debian DSA Debian DSA DSA-4306-1 python2.7 security update
Debian DSA Debian DSA DSA-4307-1 python3.5 security update
EUVD EUVD EUVD-2018-11714 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.
Ubuntu USN Ubuntu USN USN-3817-1 Python vulnerabilities
Ubuntu USN Ubuntu USN USN-3817-2 Python vulnerabilities
Ubuntu USN Ubuntu USN USN-6891-1 Python vulnerabilities
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

References
Link Providers
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html cve-icon cve-icon
http://www.securitytracker.com/id/1042001 cve-icon cve-icon
https://access.redhat.com/errata/RHBA-2019:0327 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:3041 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2018:3505 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:1260 cve-icon cve-icon
https://access.redhat.com/errata/RHSA-2019:3725 cve-icon cve-icon
https://bugs.python.org/issue32981 cve-icon cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061 cve-icon cve-icon
https://docs.python.org/3.5/whatsnew/changelog.html#python-3-5-6-release-candidate-1 cve-icon cve-icon
https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-final cve-icon
https://docs.python.org/3.6/whatsnew/changelog.html#python-3-6-5-release-candidate-1 cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2018/09/msg00030.html cve-icon cve-icon
https://lists.debian.org/debian-lts-announce/2018/09/msg00031.html cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46PVWY5LFP4BRPG3BVQ5QEEFYBVEXHCK/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AEZ5IQT7OF7Q2NCGIVABOWYGKO7YU3NJ/ cve-icon cve-icon
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JSKPGPZQNTAULHW4UH63KGOOUIDE4RRB/ cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2018-1061 cve-icon
https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbst03951en_us cve-icon cve-icon
https://usn.ubuntu.com/3817-1/ cve-icon cve-icon
https://usn.ubuntu.com/3817-2/ cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2018-1061 cve-icon
https://www.debian.org/security/2018/dsa-4306 cve-icon cve-icon
https://www.debian.org/security/2018/dsa-4307 cve-icon cve-icon
History

Sat, 12 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.01469}

epss

{'score': 0.01399}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: redhat

Published:

Updated: 2024-08-05T03:51:48.415Z

Reserved: 2017-12-04T00:00:00

Link: CVE-2018-1061

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2018-06-19T12:29:00.220

Modified: 2024-11-21T03:59:05.747

Link: CVE-2018-1061

cve-icon Redhat

Severity : Moderate

Publid Date: 2018-03-14T00:00:00Z

Links: CVE-2018-1061 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses