CVE-2016-2191

Publication date 13 April 2016

Last updated 25 August 2025

Ubuntu priority

Cvss 3 Severity Score

Description

The bmp_read_rows function in pngxtern/pngxrbmp.c in OptiPNG before 0.7.6 allows remote attackers to cause a denial of service (invalid memory write and crash) via a series of delta escapes in a crafted BMP image.

Status

Show unmaintained releases

Package	Ubuntu Release	Status
optipng	15.10 wily	Fixed 0.7.5-1ubuntu0.1
	14.04 LTS trusty	Fixed 0.6.4-1ubuntu0.14.04.1
	12.04 LTS precise	Fixed 0.6.4-1ubuntu0.12.04.1

Severity score breakdown

CVSS version: CVSS v3.0

Base score 6.5 · Medium

Base metrics

Parameter	Value
Attack vector	Network
Attack complexity	Low
Privileges required	None
User interaction	Required
Scope	Unchanged
Confidentiality impact	None
Integrity impact	None
Availability impact	High

Scores

Parameter	Value
Base score	6.5 · Medium
Exploitability score	-
Impact score	-

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

References

Related Ubuntu Security Notices (USN)

USN-2951-1
OptiPNG vulnerabilities
18 April 2016