Multiple vulnerabilities in Zimbra Collaboration (ZCS)



Risk Critical
Patch available YES
Number of vulnerabilities 8
CVE-ID N/A
CWE-ID CWE-79
CWE-22
CWE-352
CWE-98
CWE-798
CWE-211
CWE-200
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Zimbra Collaboration
Web applications / Webmail solutions

Vendor Synacor Inc.

Security Bulletin

This security bulletin contains information about 8 vulnerabilities.

1) Stored cross-site scripting

EUVDB-ID: #VU118165

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

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. A remote attacker 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

Zimbra Collaboration: 10.0.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released
https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.0.18_Released


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) Path traversal

EUVDB-ID: #VU118166

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences within the ExportAndDeleteItemsRequest API. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 10.0.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released
https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.0.18_Released


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 request forgery

EUVDB-ID: #VU118167

Risk: Medium

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:L/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin in specific authentication flows. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 10.0.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released
https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.0.18_Released


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) PHP file inclusion

EUVDB-ID: #VU118168

Risk: Critical

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Red]

CVE-ID: N/A

CWE-ID: CWE-98 - Improper Control of Filename for Include/Require Statement in PHP Program

Exploit availability: No

Description

The vulnerability allows a remote attacker to include and execute arbitrary PHP files on the server.

The vulnerability exists due to incorrect input validation when including PHP files in the RestFilter. A remote non-authenticated attacker can send a specially crafted HTTP request to the affected application, include and execute arbitrary PHP code on the system with privileges of the web server.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 10.0.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released
https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.0.18_Released


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.

5) Use of hard-coded credentials

EUVDB-ID: #VU118169

Risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Green]

CVE-ID: N/A

CWE-ID: CWE-798 - Use of Hard-coded Credentials

Exploit availability: No

Description

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

The vulnerability exists due to presence of hard-coded credentials within the Flickr API from the Flickr Zimlet. A remote attacker could use the credentials to access uploaded images. 


Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 10.1.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released


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.

6) Stored cross-site scripting

EUVDB-ID: #VU118170

Risk: High

CVSSv4.0: 2.4 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N/E:U/U:Amber]

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 in Zimbra Mail Client for emails with PDF attachments. A remote attacker can send a specially crafted email to the victim 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

Zimbra Collaboration: 10.1.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released


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.

7) Information exposure through externally-generated error message

EUVDB-ID: #VU118171

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-211 - Externally-generated error message containing sensitive information

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 in the PreAuthServlet while handling error conditions. A remote attacker can obtain sensitive information on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 10.1.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released


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) Information disclosure

EUVDB-ID: #VU118172

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: N/A

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

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 application. A remote attacker can enumerate admin user accounts. 

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 10.1.0 - 10.1.12

CPE2.3 External links

https://wiki.zimbra.com/wiki/Security_Center#ZCS_10.1.13_Released


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.



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