SB2019081703 - Division by zero in GIFLIB
Published: August 17, 2019 Updated: July 17, 2020
Security Bulletin ID
SB2019081703
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Denial of service
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Division by zero (CVE-ID: CVE-2019-15133)
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
In GIFLIB before 2019-02-16, a malformed GIF file triggers a divide-by-zero exception in the decoder function DGifSlurp in dgif_lib.c if the height field of the ImageSize data structure is equal to zero.
Remediation
Install update from vendor's website.