SB2017080710 - Ubuntu update for LibTIFF
Published: August 7, 2017
Security Bulletin ID
SB2017080710
Severity
High
Patch available
YES
Number of vulnerabilities
2
Exploitation vector
Remote access
Highest impact
Code execution
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 secuirty vulnerabilities.
1) Out-of-bounds write (CVE-ID: CVE-2016-3945)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.The weakness exists in the (1) cvt_by_strip and (2) cvt_by_tile functions in the tiff2rgba tool due to integer overflow when -b mode is enabled. A remote attacker can trick the victim into opening a specially crafted TIFF image, trigger out-of-bounds write and cause the service to crash or execute arbitrary code.
Successful exploitation of the vulnerability may result in system compromise.
2) Heap-based buffer overflow (CVE-ID: CVE-2017-5225)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to boundary error in "tools/tiffcp.cwhen" processing images. A remote attacker can create an image with specially crafted BitsPerSample value, trigger heap-based buffer overflow and execute arbitrary code on the target system with privileges of the current user.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.