6.1
MEDIUM
CVE-2019-18348
Python urllib CRLF Injection Vulnerability
Description

An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.

INFO

Published Date :

Oct. 23, 2019, 5:15 p.m.

Last Modified :

Nov. 7, 2023, 3:06 a.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

2.7

Exploitability Score :

2.8
Public PoC/Exploit Available at Github

CVE-2019-18348 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2019-18348 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Python python
: Total Affected Vendor : 1 | Products : 1
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2019-18348.

URL Resource
http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html Mailing List Technical Description
https://bugs.python.org/issue30458#msg347282 Issue Tracking Vendor Advisory
https://bugzilla.redhat.com/show_bug.cgi?id=1727276 Issue Tracking Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing List Technical Description
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/
https://security.netapp.com/advisory/ntap-20191107-0004/ Technical Description
https://usn.ubuntu.com/4333-1/ Technical Description
https://usn.ubuntu.com/4333-2/ Technical Description
https://www.oracle.com/security-alerts/cpuoct2020.html Technical Description

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Profile Photo
vincent-deng/veracode-container-security-finding-parser

Map Vulnerabilities into Different Layers of the Container Image

Python

Updated: 1 year, 8 months ago
1 stars 0 fork 0 watcher
Born at : Oct. 5, 2022, 12:07 p.m. This repo has been linked 1276 different CVEs too.
Profile Photo
phonito/phonito-vulnerable-container

Test container known to be vulnerable. Do NOT use this apart from for testing

Dockerfile

Updated: 4 years, 5 months ago
1 stars 0 fork 0 watcher
Born at : Nov. 1, 2019, 3:43 p.m. This repo has been linked 37 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2019-18348 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2019-18348 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/ [No types assigned]
    Added Reference MITRE https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/ [No types assigned]
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/
    Removed Reference MITRE https://lists.fedoraproject.org/archives/list/[email protected]/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/
  • Modified Analysis by [email protected]

    Nov. 16, 2020

    Action Type Old Value New Value
    Changed Reference Type http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html No Types Assigned http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html Mailing List, Technical Description
    Changed Reference Type https://bugs.python.org/issue30458#msg347282 Issue Tracking https://bugs.python.org/issue30458#msg347282 Issue Tracking, Vendor Advisory
    Changed Reference Type https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html No Types Assigned https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html Mailing List, Technical Description
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/ Mailing List, Technical Description
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/ Mailing List, Technical Description
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/ Mailing List, Technical Description
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/ Mailing List, Technical Description
    Changed Reference Type https://lists.fedoraproject.org/archives/list/[email protected]/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/ No Types Assigned https://lists.fedoraproject.org/archives/list/[email protected]/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/ Mailing List, Technical Description
    Changed Reference Type https://security.netapp.com/advisory/ntap-20191107-0004/ No Types Assigned https://security.netapp.com/advisory/ntap-20191107-0004/ Technical Description
    Changed Reference Type https://usn.ubuntu.com/4333-1/ No Types Assigned https://usn.ubuntu.com/4333-1/ Technical Description
    Changed Reference Type https://usn.ubuntu.com/4333-2/ No Types Assigned https://usn.ubuntu.com/4333-2/ Technical Description
    Changed Reference Type https://www.oracle.com/security-alerts/cpuoct2020.html No Types Assigned https://www.oracle.com/security-alerts/cpuoct2020.html Technical Description
    Changed CPE Configuration OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.7.17 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.8.0 OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.7.17 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (excluding) 3.5.10 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.6.0 up to (excluding) 3.6.11 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.7.0 up to (excluding) 3.7.8 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.8.0 up to (excluding) 3.8.3
  • CVE Modified by [email protected]

    Nov. 02, 2020

    Action Type Old Value New Value
    Changed Description An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.) An issue was discovered in urllib2 in Python 2.x through 2.7.17 and urllib in Python 3.x through 3.8.0. CRLF injection is possible if the attacker controls a url parameter, as demonstrated by the first argument to urllib.request.urlopen with \r\n (specifically in the host component of a URL) followed by an HTTP header. This is similar to the CVE-2019-9740 query string issue and the CVE-2019-9947 path string issue. (This is not exploitable when glibc has CVE-2016-10739 fixed.). This is fixed in: v2.7.18, v2.7.18rc1; v3.5.10, v3.5.10rc1; v3.6.11, v3.6.11rc1, v3.6.12; v3.7.8, v3.7.8rc1, v3.7.9; v3.8.3, v3.8.3rc1, v3.8.4, v3.8.4rc1, v3.8.5, v3.8.6, v3.8.6rc1.
  • CVE Modified by [email protected]

    Oct. 20, 2020

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuoct2020.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 15, 2020

    Action Type Old Value New Value
    Added Reference https://lists.debian.org/debian-lts-announce/2020/07/msg00011.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 10, 2020

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/A5NSAX4SC3V64PGZUPH7PRDLSON34Q5A/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 04, 2020

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/UESGYI5XDAHJBATEZN3MHNDUBDH47AS6/ [No Types Assigned]
  • CVE Modified by [email protected]

    May. 23, 2020

    Action Type Old Value New Value
    Added Reference http://lists.opensuse.org/opensuse-security-announce/2020-05/msg00041.html [No Types Assigned]
  • CVE Modified by [email protected]

    May. 04, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4333-2/ [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 29, 2020

    Action Type Old Value New Value
    Added Reference https://usn.ubuntu.com/4333-1/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 11, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/4X3HW5JRZ7GCPSR7UHJOLD7AWLTQCDVR/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 10, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/JCPGLTTOBB3QEARDX4JOYURP6ELNNA2V/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 10, 2019

    Action Type Old Value New Value
    Added Reference https://lists.fedoraproject.org/archives/list/[email protected]/message/M34WOYCDKTDE5KLUACE2YIEH7D37KHRX/ [No Types Assigned]
  • CVE Modified by [email protected]

    Nov. 07, 2019

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20191107-0004/ [No Types Assigned]
  • Initial Analysis by [email protected]

    Oct. 29, 2019

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:N/I:P/A:N)
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
    Changed Reference Type https://bugs.python.org/issue30458#msg347282 No Types Assigned https://bugs.python.org/issue30458#msg347282 Issue Tracking
    Changed Reference Type https://bugzilla.redhat.com/show_bug.cgi?id=1727276 No Types Assigned https://bugzilla.redhat.com/show_bug.cgi?id=1727276 Issue Tracking, Third Party Advisory
    Added CWE NIST CWE-74
    Added CPE Configuration OR *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 2.0 up to (including) 2.7.17 *cpe:2.3:a:python:python:*:*:*:*:*:*:*:* versions from (including) 3.0 up to (including) 3.8.0
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2019-18348 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2019-18348 weaknesses.

CAPEC-3: Using Leading 'Ghost' Character Sequences to Bypass Input Filters Using Leading 'Ghost' Character Sequences to Bypass Input Filters CAPEC-6: Argument Injection Argument Injection CAPEC-7: Blind SQL Injection Blind SQL Injection CAPEC-8: Buffer Overflow in an API Call Buffer Overflow in an API Call CAPEC-9: Buffer Overflow in Local Command-Line Utilities Buffer Overflow in Local Command-Line Utilities CAPEC-10: Buffer Overflow via Environment Variables Buffer Overflow via Environment Variables CAPEC-13: Subverting Environment Variable Values Subverting Environment Variable Values CAPEC-14: Client-side Injection-induced Buffer Overflow Client-side Injection-induced Buffer Overflow CAPEC-24: Filter Failure through Buffer Overflow Filter Failure through Buffer Overflow CAPEC-28: Fuzzing Fuzzing CAPEC-34: HTTP Response Splitting HTTP Response Splitting CAPEC-42: MIME Conversion MIME Conversion CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers CAPEC-45: Buffer Overflow via Symbolic Links Buffer Overflow via Symbolic Links CAPEC-46: Overflow Variables and Tags Overflow Variables and Tags CAPEC-47: Buffer Overflow via Parameter Expansion Buffer Overflow via Parameter Expansion CAPEC-51: Poison Web Service Registry Poison Web Service Registry CAPEC-52: Embedding NULL Bytes Embedding NULL Bytes CAPEC-53: Postfix, Null Terminate, and Backslash Postfix, Null Terminate, and Backslash CAPEC-64: Using Slashes and URL Encoding Combined to Bypass Validation Logic Using Slashes and URL Encoding Combined to Bypass Validation Logic CAPEC-67: String Format Overflow in syslog() String Format Overflow in syslog() CAPEC-71: Using Unicode Encoding to Bypass Validation Logic Using Unicode Encoding to Bypass Validation Logic CAPEC-72: URL Encoding URL Encoding CAPEC-76: Manipulating Web Input to File System Calls Manipulating Web Input to File System Calls CAPEC-78: Using Escaped Slashes in Alternate Encoding Using Escaped Slashes in Alternate Encoding CAPEC-79: Using Slashes in Alternate Encoding Using Slashes in Alternate Encoding CAPEC-80: Using UTF-8 Encoding to Bypass Validation Logic Using UTF-8 Encoding to Bypass Validation Logic CAPEC-83: XPath Injection XPath Injection CAPEC-84: XQuery Injection XQuery Injection CAPEC-101: Server Side Include (SSI) Injection Server Side Include (SSI) Injection CAPEC-105: HTTP Request Splitting HTTP Request Splitting CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection CAPEC-120: Double Encoding Double Encoding CAPEC-135: Format String Injection Format String Injection CAPEC-250: XML Injection XML Injection CAPEC-267: Leverage Alternate Encoding Leverage Alternate Encoding CAPEC-273: HTTP Response Smuggling HTTP Response Smuggling
Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.28 }} -0.00%

score

0.67791

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
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: