CVE-2015-8540

Publication date 11 December 2015

Last updated 25 August 2025

Ubuntu priority

Medium

Why this priority?

Cvss 3 Severity Score

8.8 · High

Score breakdown

Description

Integer underflow in the png_check_keyword function in pngwutil.c in libpng 0.90 through 0.99, 1.0.x before 1.0.66, 1.1.x and 1.2.x before 1.2.56, 1.3.x and 1.4.x before 1.4.19, and 1.5.x before 1.5.26 allows remote attackers to have unspecified impact via a space character as a keyword in a PNG image, which triggers an out-of-bounds read.

Status

Package Ubuntu Release Status
chromium-browser 15.10 wily
Not affected
15.04 vivid
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected
firefox 15.10 wily
Not affected
15.04 vivid
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected
libpng 15.10 wily
Fixed 1.2.51-0ubuntu3.15.10.2
15.04 vivid
Fixed 1.2.51-0ubuntu3.15.04.2
14.04 LTS trusty
Fixed 1.2.50-1ubuntu2.14.04.2
12.04 LTS precise
Fixed 1.2.46-3ubuntu4.2
thunderbird 15.10 wily
Not affected
15.04 vivid
Not affected
14.04 LTS trusty Not in release
12.04 LTS precise
Not affected

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
libpng

Severity score breakdown

CVSS version: CVSS v3.0

Base score 8.8 · High

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

References

Related Ubuntu Security Notices (USN)

    • USN-2861-1
    • libpng vulnerabilities
    • 6 January 2016

Other references

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