Multiple vulnerabilities in Splunk Enterprise

1) Stored cross-site scripting

EUVDB-ID: #VU76850

Risk: Low

CVSSv3.1: 5.6 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32711

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 Bootstrap web framework. 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

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://research.splunk.com/application/8a43558f-a53c-4ee4-86c1-30b1e8ef3606/
http://advisory.splunk.com/advisories/SVD-2023-0605

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

2) Improper access control

EUVDB-ID: #VU76917

Risk: Low

CVSSv3.1: 2.4 [CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32717

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 to the "/services/indexing/preview" REST endpoint. A remote user with ‘edit_monitor’ and ‘edit_upload_and_index’ capabilities can bypass implemented security restrictions and overwrite search results if they know the search ID (SID) of an existing search job.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://research.splunk.com/application/bbe26f95-1655-471d-8abd-3d32fafa86f8/
http://advisory.splunk.com/advisories/SVD-2023-0612

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

3) XML External Entity injection

EUVDB-ID: #VU76913

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: CVE-2023-32706

CWE-ID: CWE-611 - Improper Restriction of XML External Entity Reference ('XXE')

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 XML input within the within SAML authentication. A remote non-authenticated attacker can pass a specially crafted XML code to the application and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://advisory.splunk.com/advisories/SVD-2023-0601

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

4) Improper Check for Unusual or Exceptional Conditions

EUVDB-ID: #VU76918

Risk: Medium

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

CVE-ID: CVE-2023-32716

CWE-ID: CWE-754 - Improper Check for Unusual or Exceptional Conditions

Exploit availability: No

Description

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

The vulnerability exists due to improper error handling in the ‘dump’ SPL command. A remote user can supply a longer-than-expected filename with the command and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://advisory.splunk.com/advisories/SVD-2023-0611
http://research.splunk.com/application/fb0e6823-365f-48ed-b09e-272ac4c1dad6/

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

5) Improper Authorization

EUVDB-ID: #VU76916

Risk: Medium

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

CVE-ID: CVE-2023-32709

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to application does not properly restrict access to sensitive information. A remote user with "user" capability can use the "rest" SPL command against the ‘conf-user-seed’ REST endpoint to disclose the hashed version of the initial user name and password for the Splunk instance.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://research.splunk.com/application/a1be424d-e59c-4583-b6f9-2dcc23be4875/
http://advisory.splunk.com/advisories/SVD-2023-0604

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

6) Information disclosure

EUVDB-ID: #VU76919

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-2023-32710

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

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

The vulnerability exists due to excessive data output by the application. A remote user can perform an unauthorized transfer of data from a search using the ‘copyresults’ command if they know the search ID (SID) of a search job that has recently run.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://advisory.splunk.com/advisories/SVD-2023-0609

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

7) HTTP response splitting

EUVDB-ID: #VU76915

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-2023-32708

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

Exploit availability: No

Description

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

The vulnerability exists due to software does not correclty process CRLF character sequences with the "rest" SPL command. A remote user 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 updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://research.splunk.com/application/e615a0e1-a1b2-4196-9865-8aa646e1708c/
http://advisory.splunk.com/advisories/SVD-2023-0603

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

8) Improper Output Neutralization for Logs

EUVDB-ID: #VU76920

Risk: Low

CVSSv3.1: 2.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-32712

CWE-ID: CWE-117 - Improper Output Neutralization for Logs

Exploit availability: No

Description

The vulnerability allows a remote attacker to alter log files.

The vulnerability exists due to improper input validation. A remote attacker can use a specially crafted web URL in their browser to cause log file injection, in which the attack inserts American National Standards Institute (ANSI) escape codes into specific files using a terminal program that supports those escape codes.

The attack requires a terminal program that supports the translation of ANSI escape codes and requires additional user interaction to successfully execute.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://advisory.splunk.com/advisories/SVD-2023-0606

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

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

9) Improper Authorization

EUVDB-ID: #VU76914

Risk: Medium

CVSSv3.1: 7.5 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N/E:F/RL:O/RC:C]

CVE-ID: CVE-2023-32707

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: Yes

Description

The vulnerability allows a remote user to escalate privileges within the application.

The vulnerability exists due to application does not honor the "grantableRoles" setting in the authorize.conf configuration file. A remote user with "edit_user" capability can send a specially crafted HTTP request and obtain administrative privileges within the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Splunk Enterprise: 8.1.0 - 9.0.4

External links

http://research.splunk.com/application/39e1c326-67d7-4c0d-8584-8056354f6593/
http://advisory.splunk.com/advisories/SVD-2023-0602

Q & A

Can this vulnerability be exploited remotely?

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

How the attacker can exploit this vulnerability?

The attacker would have to send a specially crafted request to the affected application in order to exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, a fully functional exploit for this vulnerability is available.