Multiple vulnerabilities in WordPress

1) Deserialization of Untrusted Data

EUVDB-ID: #VU82027

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data. A remote user can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 6.3 - 6.3.1

External links

http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Code Injection

EUVDB-ID: #VU82032

Risk: Medium

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-94 - Improper Control of Generation of Code ('Code Injection')

Exploit availability: No

Description

The vulnerability allows a remote user to execute arbitrary shortcodes.

The vulnerability exists due to improper input validation. A remote user can bypass implemented security restrictions and execute arbitrary shortcodes on the website.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 4.1 - 6.3.1

External links

http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Cross-site scripting

EUVDB-ID: #VU82041

Risk: Medium

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via success_url and reject_url parameters in the application password screen. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 5.6 - 6.3.1

External links

http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/
http://wpscan.com/vulnerability/da1419cc-d821-42d6-b648-bdb3c70d91f2/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Stored cross-site scripting

EUVDB-ID: #VU82043

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote user to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the footnotes block. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 6.3 - 6.3.1

External links

http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Improper access control

EUVDB-ID: #VU82018

Risk: Low

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-39999

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions. A remote user can bypass implemented security restrictions and read comments on private and password protected posts.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 4.1 - 6.3.1

External links

http://patchstack.com/database/vulnerability/wordpress/wordpress-wordpress-core-core-6-3-2-contributor-comment-read-on-private-and-password-protected-post-vulnerability?_s_id=cve
http://patchstack.com/articles/wordpress-core-6-3-2-security-update-technical-advisory?_s_id=cve
http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Stored cross-site scripting

EUVDB-ID: #VU82019

Risk: Low

CVSSv3.1: 4.7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-38000

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in the post link navigation block. A remote user can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 5.9 - 6.3.1

External links

http://patchstack.com/database/vulnerability/wordpress/wordpress-core-6-3-2-contributor-stored-xss-in-navigation-links-block-vulnerability?_s_id=cve
http://patchstack.com/articles/wordpress-core-6-3-2-security-update-technical-advisory?_s_id=cve
http://patchstack.com/database/vulnerability/gutenberg/wordpress-gutenberg-plugin-16-8-0-contributor-stored-xss-in-navigation-links-block-vulnerability?_s_id=cve
http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

7) Information disclosure

EUVDB-ID: #VU82022

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-5561

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the "/wp-json/wp/v2/users" REST API endpoin. A remote attacker can disclose email addresses of WordPress users by probing them character by character.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 4.7 - 6.3.1

External links

http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/
http://wpscan.com/blog/email-leak-oracle-vulnerability-addressed-in-wordpress-6-3-2/
http://wpscan.com/vulnerability/19380917-4c27-4095-abf1-eba6f913b441/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

8) Input validation error

EUVDB-ID: #VU82044

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: N/A

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input when processing the X-HTTP-Method-Override header. A remote attacker can send specially crafted requests to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WordPress: 4.7 - 6.3.1

External links

http://wordpress.org/news/2023/10/wordpress-6-3-2-maintenance-and-security-release/
http://wpscan.com/vulnerability/6d80e09d-34d5-4fda-81cb-e703d0e56e4f/

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.