Multiple vulnerabilities in Zimbra Collaboration

1) Security features bypass

EUVDB-ID: #VU76646

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-34193

CWE-ID: CWE-254 - Security Features

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to unspecified error in ClientUploader packages. A remote attacker can bypass implemented security restrictions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 8.8 - 10.0.0

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_Released
http://wiki.zimbra.com/wiki/Security_Center#ZCS_9.0.0_Patch_33_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) HTTP response splitting

EUVDB-ID: #VU73107

Risk: Medium

CVSSv3.1: 5.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2023-25690

CWE-ID: CWE-113 - Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Response Splitting')

Exploit availability: Yes

Description

The vulnerability allows a remote attacker to perform HTTP splitting attacks.

The vulnerability exists due to software does not correclty process CRLF character sequences in mod_rewrite and mod_proxy. A remote attacker can send specially crafted request containing CRLF sequence and make the application to send a split HTTP response.

Successful exploitation of the vulnerability may allow an attacker perform cache poisoning attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 8.8 - 10.0.0

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_Released
http://wiki.zimbra.com/wiki/Security_Center#ZCS_9.0.0_Patch_33_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. However, proof of concept for this vulnerability is available.

3) Improper Authentication

EUVDB-ID: #VU76648

Risk: High

CVSSv3.1: 7.9 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-29382

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in an unused JSP file. A remote attacker can bypass authentication process and gain unauthorized access to the application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 8.8 - 10.0.0

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_Released
http://wiki.zimbra.com/wiki/Security_Center#ZCS_9.0.0_Patch_33_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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU70444

Risk: Medium

CVSSv3.1: 5.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-46364

CWE-ID: CWE-918 - Server-Side Request Forgery (SSRF)

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform SSRF attacks.

The vulnerability exists due to insufficient validation of user-supplied input when parsing the href attribute of XOP:Include in MTOM requests. A remote attacker can send a specially crafted HTTP request and trick the application to initiate requests to arbitrary systems.

Successful exploitation of this vulnerability may allow a remote attacker gain access to sensitive data, located in the local network or send malicious requests to other servers from the vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 8.8 - 10.0.0

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_Released
http://wiki.zimbra.com/wiki/Security_Center#ZCS_9.0.0_Patch_33_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) Input validation error

EUVDB-ID: #VU63084

Risk: Medium

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

CVE-ID: CVE-2022-22970

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 within the Spring MVC or Spring WebFlux applications. A remote user can pass specially crafted input to the application and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 8.8 - 10.0.0

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_Released
http://wiki.zimbra.com/wiki/Security_Center#ZCS_9.0.0_Patch_33_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.

6) Improper Authentication

EUVDB-ID: #VU76649

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: CVE-2023-29381

CWE-ID: CWE-287 - Improper Authentication

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass authentication process.

The vulnerability exists due to an error in 2FA validation process. A remote attacker can bypass 2FA authentication and gain unauthorized access to the application.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Zimbra Collaboration: 8.8 - 10.0.0

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_Released
http://wiki.zimbra.com/wiki/Security_Center#ZCS_9.0.0_Patch_33_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.

7) Cross-site scripting

EUVDB-ID: #VU76645

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: CVE-2023-34192

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 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

Zimbra Collaboration: 8.8 - 8.8.15 Patch 39

External links

http://wiki.zimbra.com/wiki/Security_Center#ZCS_8.8.15_Patch_40_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.