SB2017083016 - Fedora 25 update for gd

CSH
CYBERSECURITY HELP
Sign In REGISTER

Main Vulnerability Database SB2017083016

SB2017083016 - Fedora 25 update for gd

Published: August 30, 2017 Updated: April 24, 2025

Security Bulletin ID SB2017083016
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Double free memory error (CVE-ID: CVE-2017-6362)

CWE-ID: CWE-415 - Double Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear


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

The weakness exists due to double free memory error in the gdImagePngPtr function. A remote attacker can submit vectors related to a palette with no colors and cause the service to crash.

2) Information disclosure (CVE-ID: CVE-2017-7890)

CWE-ID: CWE-200 - Exposure of sensitive information to an unauthorized actor

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear


The vulnerability allows a remote attacker to obtain potentially sensitive information.

The weakness exists in the GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c due to it does not zero colorMap arrays before use. A remote attacker can trick the victim into opening a specially crafted GIF image that could use the uninitialized tables to read ~700 bytes from the top of the stack and gain access to potentially sensitive information.


Remediation

Install update from vendor's website.

References