Security Bulletin
Summary
IBM HTTP Server (powered by Apache) for IBM i is vulnerable to bypass security restrictions due to failure to send headers (CVE-2022-31813), read unintended memory due to large inputs to ap_rwrite() function (CVE-2022-28614), and read buffer beyond bound due to large input to ap_strcmp_match() (CVE-2022-28615). Each of these vulnerabilities are described in the vulnerability details section. IBM i has addressed the CVEs by providing fixes to the Apache HTTP Server implementation as described in the remediation/fixes section.
Vulnerability Details
CVEID: CVE-2022-28615
DESCRIPTION: Apache HTTP Server could allow a remote attacker to obtain sensitive information, caused by a read beyond bounds in ap_strcmp_match() when provided with an extremely large input buffer. An attacker could exploit this vulnerability to crash or disclose information.
CVSS Base score: 6.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/228340 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L)
CVEID: CVE-2022-28614
DESCRIPTION: Apache HTTP Server could allow a remote attacker to obtain sensitive information, caused by an error in the ap_rwrite() function. By reflecting very large input using ap_rwrite() or ap_rputs(), such as with mod_luas r:puts() function, an attacker could exploit this vulnerability to read unintended memory.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/228342 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID: CVE-2022-31813
DESCRIPTION: Apache HTTP Server could allow a remote attacker to bypass security restrictions, caused by the failure to send the X-Forwarded-* headers to the origin server based on client side Connection header hop-by-hop mechanism. An attacker could exploit this vulnerability to bypass IP based authentication on the origin server/application.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/228337 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM i | 7.5 |
| IBM i | 7.4 |
| IBM i | 7.3 |
| IBM i | 7.2 |
Remediation/Fixes
| IBM i Release | 5770-DG1 PTF Number | PTF Download Link |
| 7.5 | SI80337 | SI80337 |
| 7.4 | SI80353 | SI80353 |
| 7.3 | SI80354 | SI80354 |
| 7.2 | SI80355 | SI80355 |
https://www.ibm.com/support/fixcentral
Important note: IBM recommends that all users running unsupported versions of affected products upgrade to supported and fixed version of affected products.
Workarounds and Mitigations
None
Get Notified about Future Security Bulletins
References
Change History
27 Jul 2022: Initial Publication
*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.
Disclaimer
Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.
Document Location
Worldwide
Was this topic helpful?
Document Information
More support for:
IBM i 7.5 Preventative Service Planning
Software version:
7.5.0
Operating system(s):
IBM i
Document number:
6607876
Modified date:
28 July 2022
UID
ibm16607876