VDB-133412 · CVE-2019-11236 · RHSA-2019:2272

urllib3 up to 1.24.1 on Python Parameter crlf injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.7	$0-$5k	0.00

Summaryinfo

A vulnerability was found in urllib3 up to 1.24.1 on Python. It has been declared as critical. This issue affects some unknown processing. Such manipulation as part of Parameter leads to crlf injection. This vulnerability is uniquely identified as CVE-2019-11236. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability was found in urllib3 up to 1.24.1 on Python and classified as critical. Affected by this issue is some unknown processing. The manipulation as part of a Parameter leads to a crlf injection vulnerability. Using CWE to declare the problem leads to CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. Impacted is confidentiality, integrity, and availability. CVE summarizes:

In the urllib3 library through 1.24.1 for Python, CRLF injection is possible if the attacker controls the request parameter.

The bug was discovered 03/18/2019. The weakness was disclosed 04/15/2019 (Website). The advisory is shared for download at lists.fedoraproject.org. This vulnerability is handled as CVE-2019-11236 since 04/15/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 28 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 208623 (CentOS 7 : python-pip (RHSA-2020:2068)), which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197469 (Ubuntu Security Notification for Python-urllib3 Vulnerabilities (USN-3990-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (208623). The entries VDB-127866 and VDB-133842 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

urllib3

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.7
VulDB Meta Temp Score: 6.7

VulDB Base Score: 7.3
VulDB Temp Score: 7.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Crlf injection
CWE: CWE-93 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Nessus ID: 208623
Nessus Name: CentOS 7 : python-pip (RHSA-2020:2068)

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/18/2019 🔍
04/15/2019 +28 days 🔍
04/15/2019 +0 days 🔍
04/16/2019 +1 days 🔍
10/13/2024 +2007 days 🔍

Sourcesinfo

Advisory: RHSA-2019:2272
Status: Confirmed

CVE: CVE-2019-11236 (🔍)
GCVE (CVE): GCVE-0-2019-11236
GCVE (VulDB): GCVE-100-133412
See also: 🔍

Entryinfo

Created: 04/16/2019 10:35
Updated: 10/13/2024 08:07
Changes: 04/16/2019 10:35 (57), 05/29/2020 18:20 (2), 08/29/2023 10:18 (3), 10/13/2024 08:07 (16)
Complete: 🔍
Cache ID: 216::103