PySAML2 up to 4.4.0 SAMPL XML Request xml external entity reference

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.
7.2$0-$5k0.00

Summaryinfo

A vulnerability classified as critical was found in PySAML2 up to 4.4.0. Affected is an unknown function of the component SAMPL XML Request Handler. Such manipulation leads to xml external entity reference. This vulnerability is traded as CVE-2016-10149. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in PySAML2 up to 4.4.0. It has been rated as critical. Affected by this issue is an unknown function of the component SAMPL XML Request Handler. The manipulation with an unknown input leads to a xml external entity reference vulnerability. Using CWE to declare the problem leads to CWE-611. The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. Impacted is confidentiality, integrity, and availability. CVE summarizes:

XML External Entity (XXE) vulnerability in PySAML2 4.4.0 and earlier allows remote attackers to read arbitrary files via a crafted SAMPL XML request or response.

The bug was discovered 03/24/2017. The weakness was shared 03/24/2017 (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is handled as CVE-2016-10149 since 01/19/2017. 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 scanner Nessus provides a plugin with the ID 96461 (Debian DSA-3759-1 : python-pysaml2 - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 196897 (Ubuntu Security Notification for Python-pysaml2 Vulnerability (USN-3402-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (96461) and SecurityFocus (BID 97692†). The entry VDB-97496 is related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Xml external entity reference
CWE: CWE-611 / CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 96461
Nessus Name: Debian DSA-3759-1 : python-pysaml2 - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

01/12/2017 🔍
01/13/2017 +1 days 🔍
01/19/2017 +6 days 🔍
03/24/2017 +64 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
03/24/2017 +0 days 🔍
04/12/2017 +19 days 🔍
11/15/2022 +2043 days 🔍

Sourcesinfo

Advisory: RHSA-2017:0936
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-10149 (🔍)
GCVE (CVE): GCVE-0-2016-10149
GCVE (VulDB): GCVE-100-98504
SecurityFocus: 97692 - python-pysaml2 CVE-2016-10149 XML Entity Expansion Denial of Service Vulnerability
OSVDB: - CVE-2016-10149 - PySAML2 - XML External Entity Issue

See also: 🔍

Entryinfo

Created: 03/24/2017 18:55
Updated: 11/15/2022 09:08
Changes: 03/24/2017 18:55 (68), 09/13/2020 21:12 (9), 11/15/2022 09:03 (5), 11/15/2022 09:08 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!