Multiple vulnerabilities in WordPress
| Risk | Low |
| Patch available | YES |
| Number of vulnerabilities | 4 |
| CVE-ID | CVE-2017-17091 CVE-2017-17093 CVE-2017-17094 CVE-2017-17092 |
| CWE-ID | CWE-330 CWE-79 CWE-284 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
WordPress Web applications / CMS |
| Vendor | WordPress.ORG |
Security Bulletin
This security bulletin contains information about 4 vulnerabilities.
1) Insufficient randomization
EUVDB-ID: #VU9453
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-17091
CWE-ID:
CWE-330 - Use of Insufficiently Random Values
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass certain security restrictions.
The vulnerability exists in wp-admin/user-new.php script due to usage of a determinate substring in newbloguser key, which can be directly derived from the user ID. A remote attacker can guess the key and bypass intended access restrictions.
Update to version 4.9.1.
WordPress: 3.7 - 4.9
External linkshttp://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-release/
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.
2) Cross-site scripting
EUVDB-ID: #VU9454
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-17093
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform XSS attacks.
The vulnerability exists due to insufficient sanitization of the language attributes used on html elements in wp-includes/general-template.php script. A remote attacker can bypass implemented filters and execute arbitrary HTML and script code in victims browser in context of the vulnerable website.
Update to version 4.9.1.
WordPress: 3.7 - 4.9
External linkshttp://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-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: #VU9455
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-17094
CWE-ID:
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to perform XSS attacks.
The vulnerability exists due to insufficient sanitization of the attributes of enclosures in RSS and Atom feeds within wp-includes/feed.php script. A remote attacker can bypass implemented filters and execute arbitrary HTML and script code in victims browser in context of the vulnerable website.
Update to version 4.9.1.
WordPress: 3.7 - 4.9
External linkshttp://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-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.
4) Improper access control
EUVDB-ID: #VU9456
Risk: Low
CVSSv3.1: 3.9 [CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2017-17092
CWE-ID:
CWE-284 - Improper Access Control
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to upload JavaScript files.
The vulnerability exists due to incorrectly implemented access restrictions in wp-includes/functions.php script, which allowed uploading of JavaScript files for users without unfiltered_html permissions. A remote authenticated attacker can upload malicious JavaScript file and perform XSS or spoofing attacks against website users.
Update to version 4.9.1.
WordPress: 3.7 - 4.9
External linkshttp://wordpress.org/news/2017/11/wordpress-4-9-1-security-and-maintenance-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.
