Home/CVE/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 dif
CVE

CVE-2018-1061

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 dif

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.

MEDIUM · CVSS 6.5 EPSS 0.01779
Monitor
  • No active-exploitation, high-EPSS, or public-exploit signals - routine patching cadence
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-20Improper Input Validation
▤

Affected Products & Versions

12
python< 2.7.15
python>= 3.0 and < 3.4.9
python>= 3.5.0 and <= 3.5.5
python>= 3.6 and <= 3.6.4
pythonall versions
debian linuxall versions
redhat ansible towerall versions
redhat enterprise linux desktopall versions
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighPython Reverse Shell Execution Via PTY And Socket Modules
producthighInline Python Execution - Spawn Shell Via OS System Library
producthighPython One-Liners with Base64 Decoding - Linux
producthighPython Function Execution Security Warning Disabled In Excel
producthighPython One-Liners with Base64 Decoding
producthighPython Spawning Pretty TTY on Windows
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.0 · secalert@redhat.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD19 Jun 2018 · 12:29 PM
CVSS VectorCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
⚑

Vendor Advisories

17
usnUSN-6891-1
suse-csafopenSUSE-SU-2024:11202-1
suse-csafopenSUSE-SU-2024:11284-1
suse-csafSUSE-SU-2020:0234-1
suse-csafopenSUSE-SU-2020:0086-1
🔗

References & Sources

18
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00040.html
http://www.securitytracker.com/id/1042001Third Party AdvisoryVDB Entry
https://access.redhat.com/errata/RHBA-2019:0327Third Party Advisory
https://access.redhat.com/errata/RHSA-2018:3505Third Party Advisory
https://bugs.python.org/issue32981Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-1061Issue Tracking
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