Home/CVE/urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypas
CVE

CVE-2019-9948

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypas

urllib in Python 2.x through 2.7.16 supports the local_file: scheme, which makes it easier for remote attackers to bypass protection mechanisms that blacklist file: URIs, as demonstrated by triggering a urllib.urlopen('local_file:///etc/passwd') call.

CRITICAL · CVSS 9.1 EPSS 0.00918
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬡

Weakness Classification

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
▤

Affected Products & Versions

14
python>= 2.0 and < 2.7.17
python>= 3.5.0 and < 3.5.8
python>= 3.6.0 and < 3.6.9
python>= 3.7.0 and < 3.7.4
opensuse leapall versions
debian linuxall versions
fedoraproject fedoraall versions
canonical ubuntu linuxall versions
⚠

Public Exploits & PoCs

2
pocpacketstormsecurity.com · Slackware-Security-Advisory-python-Updates.htmlpacketstormsecurity.com
pocbugs.python.org · issue35907bugs.python.org
◈

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

9.1
CRITICAL · CVSS v3.1 · cve@mitre.org
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 NVD23 Mar 2019 · 06:29 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
⚑

Vendor Advisories

20
usnUSN-6891-1
suse-csafopenSUSE-SU-2024:11202-1
siemens-csafSSA-398330
rhsaRHBA-2020:0547Important
suse-csafSUSE-SU-2020:0234-1
🔗

References & Sources

16
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/2019-04/msg00092.htmlMailing ListThird Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00050.htmlMailing ListThird Party Advisory
http://www.securityfocus.com/bid/107549Third Party AdvisoryVDB Entry
https://github.com/python/cpython/pull/11842PatchThird Party Advisory
https://lists.apache.org/thread.html/r1b103833cb5bc8466e24ff0ecc5e75b45a705334ab6a444e64e840a0%40%3Cissues.bookkeeper.apache.org%3E
https://lists.debian.org/debian-lts-announce/2019/06/msg00022.htmlMailing ListThird Party Advisory
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