Requests up to 2.1.0 Session resolve_redirects session fixiation

HistoryDiffrelatejsonxmlCTI

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.
7.0	$0-$5k	0.00

Summaryinfo

A vulnerability classified as problematic has been found in Requests up to 2.1.0. Affected by this vulnerability is the function resolve_redirects of the component Session. This manipulation causes session fixiation. This vulnerability is tracked as CVE-2015-2296. No exploit exists.

Detailsinfo

A vulnerability was found in Requests up to 2.1.0. It has been declared as critical. Affected by this vulnerability is the function resolve_redirects of the component Session. The manipulation with an unknown input leads to a session fixiation vulnerability. The CWE definition for the vulnerability is CWE-384. Authenticating a user, or otherwise establishing a new user session, without invalidating any existing session identifier gives an attacker the opportunity to steal authenticated sessions. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The resolve_redirects function in sessions.py in requests 2.1.0 through 2.5.3 allows remote attackers to conduct session fixation attacks via a cookie without a host value in a redirect.

The weakness was disclosed 03/18/2015 (Website). The advisory is shared at warehouse.python.org. This vulnerability is known as CVE-2015-2296 since 03/14/2015. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 81879 (Ubuntu 14.04 LTS / 14.10 : requests vulnerability (USN-2531-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196033 (Ubuntu Security Notification for Requests Vulnerability (USN-2531-1)).

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 databases at Tenable (81879), SecurityFocus (BID 73134†), Vulnerability Center (SBV-49252†) and CERT Bund (WID-SEC-2026-0778). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Affected

Dell Secure Connect Gateway

Productinfo

Name

Requests

Version

License

open-source

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Session fixiation
CWE: CWE-384
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 81879
Nessus Name: Ubuntu 14.04 LTS / 14.10 : requests vulnerability (USN-2531-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 14611
OpenVAS Name: Amazon Linux Local Check: ALAS-2015-541
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

03/14/2015 🔍
03/17/2015 +3 days 🔍
03/17/2015 +0 days 🔍
03/18/2015 +1 days 🔍
03/18/2015 +0 days 🔍
03/30/2015 +12 days 🔍
03/30/2015 +0 days 🔍
03/19/2026 +4007 days 🔍

Sourcesinfo

Advisory: USN-2531-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-2296 (🔍)
GCVE (CVE): GCVE-0-2015-2296
GCVE (VulDB): GCVE-100-74437
SecurityFocus: 73134
Vulnerability Center: 49252 - Requests 2.1.0 through 2.5.3 Remote Session Fixation via a Crafted Cookie, Medium
CERT Bund: WID-SEC-2026-0778 - Dell Secure Connect Gateway Policy Manager: Mehrere Schwachstellen

Entryinfo

Created: 03/30/2015 12:39
Updated: 03/19/2026 10:51
Changes: 03/30/2015 12:39 (57), 06/24/2017 09:19 (7), 05/01/2022 14:37 (4), 05/01/2022 14:38 (1), 11/28/2024 18:07 (29), 03/19/2026 10:51 (7)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.