SB2015061101 - Ubuntu update for libgd2

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Main Vulnerability Database SB2015061101

SB2015061101 - Ubuntu update for libgd2

Published: June 11, 2015

Security Bulletin ID SB2015061101
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2007-0455)

CWE-ID: CWE-120 - Buffer overflow

CVSSv4: 9.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition or execute arbitrary code on the target system.

The weakness exists in the gdImageStringFTEx function in gdft.c due to buffer overflow. A remote attacker can cause the service to crash or execute arbitrary code via a specially crafted string with a JIS encoded font.

Successful exploitation of the vulnerability may result in system comprmise.


2) Infinite loop (CVE-ID: CVE-2007-2756)

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists in the gdPngReadData function due to CPU consumption. A remote attacker can trcik the victim into opening a specially crafted PNG image with truncated data, which causes infinite loop in the png_read_info function in libpng, and cause the service to crash.

Remediation

Install update from vendor's website.

References