SimpleSAMLphp up to 1.14.10 SAML 1 Response SimpleSAML_XML_Validator input validation

CVSS Meta Temp Score
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in SimpleSAMLphp up to 1.14.10. The impacted element is the function SimpleSAML_XML_Validator of the component SAML 1 Response Handler. Executing a manipulation can lead to input validation. This vulnerability is registered as CVE-2016-9955. The attack needs to be launched locally. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in SimpleSAMLphp up to 1.14.10 and classified as problematic. This vulnerability affects the function SimpleSAML_XML_Validator of the component SAML 1 Response Handler. The manipulation with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

The SimpleSAML_XML_Validator class constructor in SimpleSAMLphp before 1.14.11 might allow remote attackers to spoof signatures on SAML 1 responses or possibly cause a denial of service (memory consumption) by leveraging improper conversion of return values to boolean.

The bug was discovered 12/03/2016. The weakness was published 02/17/2017 by Thijs Kinkhorst (Website). The advisory is shared for download at simplesamlphp.org. This vulnerability was named CVE-2016-9955 since 12/15/2016. The exploitation appears to be difficult. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 75 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 107133 (Debian DLA-1298-1 : simplesamlphp 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.

Upgrading to version 1.14.11 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (107133) and SecurityFocus (BID 94946†). Similar entry is available at VDB-97055. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.4
VulDB Meta Temp Score: 4.3

VulDB Base Score: 2.5
VulDB Temp Score: 2.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 107133
Nessus Name: Debian DLA-1298-1 : simplesamlphp security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 15856
OpenVAS Name: Debian LTS Advisory ([SECURITY] [DLA 1298-1] simplesamlphp security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: SimpleSAMLphp 1.14.11

Timelineinfo

12/03/2016 🔍
12/12/2016 +9 days 🔍
12/15/2016 +3 days 🔍
02/16/2017 +63 days 🔍
02/17/2017 +1 days 🔍
02/17/2017 +0 days 🔍
03/02/2018 +378 days 🔍
03/06/2018 +4 days 🔍
08/15/2020 +893 days 🔍

Sourcesinfo

Advisory: simplesamlphp.org
Researcher: Thijs Kinkhorst
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-9955 (🔍)
GCVE (CVE): GCVE-0-2016-9955
GCVE (VulDB): GCVE-100-97060
SecurityFocus: 94946 - SimpleSAMLphp CVE-2016-9955 Security Bypass Vulnerability
OSVDB: - CVE-2016-9955 - SimpleSAMLphp - Spoofing Issue

See also: 🔍

Entryinfo

Created: 02/17/2017 11:46
Updated: 08/15/2020 12:59
Changes: 02/17/2017 11:46 (77), 08/15/2020 12:59 (4)
Complete: 🔍
Cache ID: 216:2EA:103

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