CVE-2018-1061
MEDIUM
6.5
CVSS Score
Published: June 19, 2018 at 12:00 PM UTC
Updated: October 15, 2026 at 06:17 PM UTC
8 products affected across 5 vendorsDebian LinuxFedoraUbuntu Linux
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Severity
MEDIUM6.5
Exploit prediction
EPSS 5%
SSVC
No known exploit
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.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Ubuntu Linux· Canonicalrubygems
95%Debian Linux· Debiandrupal
95%v < 2.7.153.0 ≤ v < 3.4.93.5.0 ≤ v ≤ 3.5.53.6 ≤ v ≤ 3.6.42.7.153.4.93.5.63.7.03.7.0 alpha13.7.0 alpha23.7.0 alpha33.7.0 alpha43.7.0 beta13.7.0 beta23.7.0 beta33.7.0 beta43.7.0 beta53.7.0 rc1
Affected range stops below 2.7.15, so it looks safe — our inference, not a vendor statement
Affected range stops below 3.4.9, so it looks safe — our inference, not a vendor statement
95%
Enterprise Linux Server· Red Hatrubygems
95%95%
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (21)
Vendor Advisoryx_refsource_SUSE
Source: [email protected]
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.htmlVDB Entryx_refsource_SECTRACKThird Party Advisory
Source: [email protected]
http://www.securitytracker.com/id/1042001Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHBA-2019:0327Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3041Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2018:3505Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:1260Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:3725SSVC — Action Prioritization
SSVCNo known exploitNot automatablePartial impact
SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.
CVSS
6.5MEDIUMredhat
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- REQUIRED
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-20NVD-CWE-noinfo
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