SB2019060705 - OpenSUSE Linux update for libpng16

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Main Vulnerability Database SB2019060705

SB2019060705 - OpenSUSE Linux update for libpng16

Published: June 7, 2019 Updated: June 9, 2019

Security Bulletin ID SB2019060705
Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Integer overflow (CVE-ID: CVE-2018-13785)

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

The vulnerability exists due to integer overflow when a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c). A remote attacker can send a specially crafted PNG file, trigger divide-by-zero error and cause the service to crash.


2) Use-after-free (CVE-ID: CVE-2019-7317)

The vulnerability allows a remote attacker to cause DoS condition.

The vulnerability exists due to a use-after-free memory error in the png_image_free function, as defined in the png.c source code file when calling on png_safe_execute. A remote attacker can send specially crafted data, trigger a call on png_safe_execute and trigger memory corruption, resulting in a DoS condition.


Remediation

Install update from vendor's website.

References