SimpleSAMLphp up to 1.10.3/2.3.4/3.1.0 Regular Expression Timestamp 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.
6.3$0-$5k0.09

Summaryinfo

A vulnerability has been found in SimpleSAMLphp up to 1.10.3/2.3.4/3.1.0 and classified as problematic. This impacts an unknown function of the component Regular Expression. This manipulation as part of Timestamp causes injection. The identification of this vulnerability is CVE-2018-6519. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in SimpleSAMLphp up to 1.10.3/2.3.4/3.1.0. It has been declared as problematic. Affected by this vulnerability is an unknown part of the component Regular Expression. The manipulation as part of a Timestamp leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect availability. The summary by CVE is:

The SAML2 library before 1.10.4, 2.x before 2.3.5, and 3.x before 3.1.1 in SimpleSAMLphp has a Regular Expression Denial of Service vulnerability for fraction-of-seconds data in a timestamp.

The bug was discovered 02/01/2018. The weakness was shared 02/02/2018 (Website). It is possible to read the advisory at simplesamlphp.org. This vulnerability is known as CVE-2018-6519 since 02/01/2018. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1055 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 108615 (Fedora 27 : php-simplesamlphp-saml2_3 (2018-37e28670f2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 277670 (Fedora Security Update for php-simplesamlphp-saml2_3 (FEDORA-2018-f2097d8937)).

Upgrading to version 1.10.4, 2.3.5 or 3.1.1 eliminates this vulnerability. A possible mitigation has been published 2 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (108615). The entries VDB-114092 and VDB-114100 are related to this item. Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
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: Injection
CWE: CWE-74 / CWE-707 / CWE-20
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: 108615
Nessus Name: Fedora 27 : php-simplesamlphp-saml2_3 (2018-37e28670f2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 802334
OpenVAS Name: Debian Security Advisory DSA 4127-1 (simplesamlphp - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: SimpleSAMLphp 1.10.4/2.3.5/3.1.1

Timelineinfo

02/01/2018 🔍
02/01/2018 +0 days 🔍
02/01/2018 +0 days 🔍
02/02/2018 +1 days 🔍
02/03/2018 +1 days 🔍
03/25/2018 +50 days 🔍
03/27/2018 +2 days 🔍
02/03/2023 +1774 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-37e28670f2
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-6519 (🔍)
GCVE (CVE): GCVE-0-2018-6519
GCVE (VulDB): GCVE-100-112759

OVAL: 🔍
See also: 🔍

Entryinfo

Created: 02/03/2018 09:03
Updated: 02/03/2023 14:05
Changes: 02/03/2018 09:03 (74), 01/01/2020 09:39 (3), 02/03/2023 14:05 (4)
Complete: 🔍
Cache ID: 216:1FA:103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!