SB2025112105 - Multiple vulnerabilities in IBM Power HMC

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Main Vulnerability Database SB2025112105

SB2025112105 - Multiple vulnerabilities in IBM Power HMC

Published: November 21, 2025 Updated: January 4, 2026

Security Bulletin ID SB2025112105
CSH Severity
High
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 33% Medium 67%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Improper Encoding or Escaping of Output (CVE-ID: CVE-2024-47252)

CWE-ID: CWE-116 - Improper Encoding or Escaping of Output

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


The vulnerability allows a remote attacker to manipulate data in log files. 

The vulnerability exists due to improper input validation in mod_ssl. In a logging configuration where CustomLog is used with "%{varname}x" or "%{varname}c" to log variables provided by mod_ssl such as SSL_TLS_SNI, no escaping is performed by either mod_log_config or mod_ssl and unsanitized data provided by the client may appear in log files. A remote attacker can manipulate contents of log files. 


2) Security features bypass (CVE-ID: CVE-2025-23048)

CWE-ID: CWE-254 - Security Features

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


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

The vulnerability exists due to access control bypass with session resumption in mod_ssl. A remote attacker can use the TLS 1.3 session resumption to bypass implemented access control.

Configurations are affected when mod_ssl is configured for multiple virtual hosts, with each restricted to a different set of trusted client certificates (for example with a different SSLCACertificateFile/Path setting). In such a case, a client trusted to access one virtual host may be able to access another virtual host, if SSLStrictSNIVHostCheck is not enabled in either virtual host.


3) Resource management error (CVE-ID: CVE-2025-49630)

CWE-ID: CWE-399 - Resource Management Errors

CVSSv4: 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:Green


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

The vulnerability exists due to improper management of internal resources in mod_proxy_http2. A remote attacker can send specially crafted requests to the server and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that the reverse proxy is configured for an HTTP/2 backend, with ProxyPreserveHost set to "on".


Remediation

Install update from vendor's website.

References