IBM Power Hardware Management Console (HMC) update for Apache HTTP server



Published: 2022-11-21
Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2021-33193
CVE-2021-44224
CWE-ID CWE-444
CWE-918
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		IBM Power Hardware Management Console (HMC)
Server applications / Other server solutions

Vendor IBM Corporation

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Inconsistent interpretation of HTTP requests

EUVDB-ID: #VU56474

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-33193

CWE-ID: CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request Smuggling')

Exploit availability: No

Description

The vulnerability allows a remote attacker to preform HTTP/2 request smuggling attacks.

The vulnerability exists due to improper validation of HTTP/2 requests in mod_proxy in Apache HTTP Server. A remote attacker can send a specially crafted HTTP/2 request to the server and smuggle arbitrary HTTP headers.

Successful exploitation of vulnerability may allow an attacker to poison web server cache and perform phishing attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Power Hardware Management Console (HMC): before 10.1.1020.0 SP1

External links

http://www.ibm.com/blogs/psirt/security-bulletin-vulnerabilities-in-apache-http-cve-2021-33193-and-cve-2021-44224-affects-power-hmc/
http://www.ibm.com/support/pages/node/6840311


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) Server-Side Request Forgery (SSRF)

EUVDB-ID: #VU59057

Risk: Medium

CVSSv3.1: 6.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-44224

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 in forward proxy configurations. A remote attacker can send a specially crafted HTTP request and trick the web server to initiate requests to arbitrary systems or cause NULL pointer dereference error and crash the web server.

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.

SSRF if possible for configuration that mix forward and reverse proxy.

Mitigation

Install update from vendor's website.

Vulnerable software versions

IBM Power Hardware Management Console (HMC): before 10.1.1020.0 SP1

External links

http://www.ibm.com/blogs/psirt/security-bulletin-vulnerabilities-in-apache-http-cve-2021-33193-and-cve-2021-44224-affects-power-hmc/
http://www.ibm.com/support/pages/node/6840311


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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