Security Bulletin: Multiple vulnerabilities in IBM HTTP Server (IHS) affect IBM Security SiteProtector System (CVE-2015-1283, CVE-2015-3183 and CVE-2015-4947)

Summary

There are multiple vulnerabilities in IBM HTTP Server (IHS) that is used by IBM Security SiteProtector System.

Vulnerability Details

CVEID: CVE-2015-1283 **
DESCRIPTION:** Multiple integer overflows in the XML_GetBuffer function in Expat through 2.1.0, as used in Google Chrome before 44.0.2403.89 and other products, allow remote attackers to cause a denial of service (heap-based buffer overflow) or possibly have unspecified other impact via crafted XML data, a related issue to CVE-2015-2716.

CVSS Base Score: 6.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104964 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L)

CVEID: CVE-2015-3183 **
DESCRIPTION:** Apache HTTP Server is vulnerable to HTTP request smuggling, caused by a chunk header parsing flaw in the apr_brigade_flatten() function. By sending a specially-crafted request in a malformed chunked header to the Apache HTTP server, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.

CVSS Base Score: 6.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104844 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N)

CVEID: CVE-2015-4947 **
DESCRIPTION:** IBM HTTP Server Administration Server could be vulnerable to a stack buffer overflow, caused by improper handling of user input. An authenticated remote attacker could overflow a buffer and execute arbitrary code on the system.

CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/104912 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

IBM Security SiteProtector System 3.0 and 3.1.1

Remediation/Fixes

For SiteProtector 3.0 and 3.1.1:
By default, SiteProtector’s Update Server Component will automatically be updated with the package listed below.

UpdateServer_3_1_1_5.pkg

Alternatively, the package can be manually obtained from the IBM Security License Key and Download Center using the following URL:

<https://ibmss.flexnetoperations.com/service/ibms/login&gt;

Workarounds and Mitigations

None