Security Bulletin: IBM Flex System Manager (FSM) is affected by libpng vulnerabilities (CVE-2015-7981, CVE-2015-8126)

Summary

Vulnerabilities have been discovered in libpng that is embedded in the IBM FSM. This bulletin addresses these vulnerabilities.

Vulnerability Details

CVEID: CVE-2015-8126**
DESCRIPTION:** libpng is vulnerable to a buffer overflow, caused by improper bounds checking by the png_set_PLTE() and png_get_PLTE() functions. By persuading a victim to open a specially-crafted PNG file, a remote attacker could overflow a buffer and execute arbitrary code on the system.
CVSS Base Score: 7.8
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/108010 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVEID: CVE-2015-7981**
DESCRIPTION:** libpng could allow a remote attacker to obtain sensitive information, caused by an out-of-bounds read in the png_convert_to_rfc1123 function. An attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/107740 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)

Affected Products and Versions

Flex System Manager 1.3.4.x
Flex System Manager 1.3.3.x
Flex System Manager 1.3.2.x

Remediation/Fixes

IBM recommends updating the FSM using the instructions referenced in this table.

Product |

VRMF |

APAR |

Remediation
—|—|—|—
Flex System Manager|

1.3.4.x |

IT16023

| Verify that Java updates have been installed, then install fsmfix1.3.4.0_IT15533_IT15534_IT15535_IT15536_IT16023.

Instructions for installing and verifying the installation of java updates can be found in Technote 761981453
Flex System Manager|

1.3.3.x |

IT16023

| Verify that Java updates have been installed, then install fsmfix1.3.3.0_IT15533_IT15534_IT15535_IT15536_IT16023.

Instructions for installing and verifying the installation of java updates can be found in Technote 736218441
Flex System Manager|

1.3.2.x |

IT16023

| Verify that Java updates have been installed, then install fsmfix1.3.2.0_IT15533_IT15534_IT15535_IT15536_IT16023.

Instructions for installing and verifying the installation of java updates can be found in Technote 736218441
For 1.1.x.x, 1.2.x.x, 1.3.0.x and 1.3.1.x IBM recommends upgrading to a fixed, supported version/release of the product.

You should verify applying this fix does not cause any compatibility issues. The fix disables MD5 signature hash by default. IBM recommends that you review your entire environment to identify other areas where you have enabled the MD5 signature hash and take appropriate mitigation and remediation actions.

Workarounds and Mitigations

None