Security Bulletin: Several vulnerabilities in the libpng component in IBM Tivoli Common Reporting (CVE-2015-8126, CVE-2015-8472, CVE-2015-8540)

Summary

Fixes of Cognos Business Intelligence is provided as part of Tivoli Common Reporting (TCR) fixes
Several vulnerabilities has been addressed in the libpng component of IBM Cognos Business Intelligence Server.

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: 7.800
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/108010 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H)

CVEID: CVE-2015-8472 DESCRIPTION: libpng is vulnerable to a buffer overflow, caused by improper bounds checking by the png_get_PLTE() and png_set_PLTE() functions. By persuading a victim to open a specially crafted PNG image, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 6.300
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/109392 for more information
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-2015-8540 DESCRIPTION: libpng is vulnerable to a buffer overflow, caused by a read underflow in png_check_keyword in pngwutil.c. By sending an overly long argument, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base Score: 9.800
CVSS Temporal Score: https://exchange.xforce.ibmcloud.com/vulnerabilities/109219 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

Tivoli Common Reporting 2.1

Tivoli Common Reporting 2.1.1

Tivoli Common Reporting 2.1.1.2

Tivoli Common Reporting 3.1

Tivoli Common Reporting 3.1.0.1

Tivoli Common Reporting 3.1.0.2

Tivoli Common Reporting 3.1.2

Tivoli Common Reporting 3.1.2.1

Remediation/Fixes

The recommended solution is to apply the fix for versions listed as soon as practical.

Workarounds and Mitigations

None