Splunk Universal Forwarder update for third-party components



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2024-13176
CVE-2024-9143
CWE-ID CWE-385
CWE-787
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Splunk Universal Forwarder
Server applications / File servers (FTP/HTTP)

Vendor Splunk Inc.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Covert Timing Channel

EUVDB-ID: #VU103600

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2024-13176

CWE-ID: CWE-385 - Covert Timing Channel

Exploit availability: No

Description

The vulnerability allows a remote attacker to recover a private key.

The vulnerability exists due to a timing side-channel in ECDSA signature computations. A remote attacker can recover the private key and decrypt data.

Successful exploitation of the vulnerability requires that the attacker's process must either be located in the same physical computer or must have a very fast network connection with low latency.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Splunk Universal Forwarder: 9.1.0 - 9.4.2

CPE2.3 External links

https://advisory.splunk.com/advisories/SVD-2025-0711


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.

2) Out-of-bounds write

EUVDB-ID: #VU98757

Risk: Low

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2024-9143

CWE-ID: CWE-787 - Out-of-bounds write

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when using the low-level GF(2^m) elliptic curve APIs with untrusted explicit values for the field polynomial. A remote attacker can send specially crafted input to the server, trigger an out-of-bounds write and perform a denial of service (DoS) attack.

Note, the vulnerability can be exploited against the application in rare cases only that involve "exotic" curve encoding.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Splunk Universal Forwarder: 9.1.0 - 9.4.2

CPE2.3 External links

https://advisory.splunk.com/advisories/SVD-2025-0711


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.



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