Your submission was sent successfully! Close

You have successfully unsubscribed! Close

Thank you for signing up for our newsletter!
In these regular emails you will find the latest updates about Ubuntu and upcoming events where you can meet our team.Close

CVE-2018-13785

Published: 9 July 2018

In libpng 1.6.34, a wrong calculation of row_factor in the png_check_chunk_length function (pngrutil.c) may trigger an integer overflow and resultant divide-by-zero while processing a crafted PNG file, leading to a denial of service.

Notes

AuthorNote
leosilva
could not reproduce with xenial version also
xenial version hasn't the code affected.
From the comments, it was tested in a xenial release, but
bug was found using a different version from git/upstream.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
libpng
Launchpad, Ubuntu, Debian
upstream Needs triage

trusty Not vulnerable
(code not present)
xenial Not vulnerable
(code not present)
artful Does not exist

bionic Does not exist

libpng1.6
Launchpad, Ubuntu, Debian
upstream
Released (1.6.34-2)
trusty Does not exist

xenial Not vulnerable

artful
Released (1.6.34-1ubuntu0.17.10.1)
bionic
Released (1.6.34-1ubuntu0.18.04.1)
Patches:
other: https://github.com/glennrp/libpng/commit/8a05766cb74af05c04c53e6c9d60c13fc4d59bf2

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality None
Integrity impact None
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H