Jasig phpCAS 1.3.4 validateCAS20 access control

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.
6.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Jasig phpCAS 1.3.4. It has been classified as critical. This affects the function validateCAS20. This manipulation causes access control. This vulnerability appears as CVE-2017-1000071. The attack may be initiated remotely. There is no available exploit.

Detailsinfo

A vulnerability was found in Jasig phpCAS 1.3.4. It has been declared as critical. Affected by this vulnerability is the function validateCAS20. The manipulation with an unknown input leads to a access control vulnerability. The CWE definition for the vulnerability is CWE-264. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Jasig phpCAS version 1.3.4 is vulnerable to an authentication bypass in the validateCAS20 function when configured to authenticate against an old CAS server.

The bug was discovered 04/06/2017. The weakness was presented 07/17/2017 with Deloitte (GitHub Repository). The advisory is shared at github.com. This vulnerability is known as CVE-2017-1000071 since 07/10/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 102 days. During that time the estimated underground price was around $0-$5k.

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 SecurityFocus (BID 99609†). See VDB-69962 for similar entry. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 5.6
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.1
NVD Vector: 🔍

CVSSv2info

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

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

NVD Base Score: 🔍

Exploitinginfo

Class: Access control
CWE: CWE-264
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

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

04/06/2017 🔍
07/10/2017 +95 days 🔍
07/17/2017 +7 days 🔍
07/17/2017 +0 days 🔍
07/17/2017 +0 days 🔍
07/18/2017 +1 days 🔍
12/12/2022 +1973 days 🔍

Sourcesinfo

Product: github.com

Advisory: 228
Researcher: Dau Huy Ngoc
Organization: Deloitte
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-1000071 (🔍)
GCVE (CVE): GCVE-0-2017-1000071
GCVE (VulDB): GCVE-100-103633
SecurityFocus: 99609 - phpCAS CVE-2017-1000071 Authentication Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 07/18/2017 08:55
Updated: 12/12/2022 14:47
Changes: 07/18/2017 08:55 (59), 10/26/2019 14:50 (5), 01/01/2021 16:49 (3), 12/12/2022 14:47 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!