CVE-2020-25664
Published: 8 December 2020
In WriteOnePNGImage() of the PNG coder at coders/png.c, an improper call to AcquireVirtualMemory() and memset() allows for an out-of-bounds write later when PopShortPixel() from MagickCore/quantum-private.h is called. The patch fixes the calls by adding 256 to rowbytes. An attacker who is able to supply a specially crafted image could affect availability with a low impact to data integrity. This flaw affects ImageMagick versions prior to 6.9.10-68 and 7.0.8-68.
Notes
| Author | Note |
|---|---|
| mdeslaur | fix attempt was reverted unclear what the fix for this issue is as of 2021-06-10 |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
imagemagick Launchpad, Ubuntu, Debian |
bionic |
Deferred
|
| focal |
Deferred
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| impish |
Ignored
(end of life)
|
|
| jammy |
Deferred
|
|
| kinetic |
Ignored
(end of life, was deferred)
|
|
| lunar |
Ignored
(end of life, was deferred)
|
|
| mantic |
Deferred
|
|
| trusty |
Needs triage
|
|
| upstream |
Released
(8:6.9.11.24+dfsg-1)
|
|
| xenial |
Released
(8:6.8.9.9-7ubuntu5.16+esm2)
Available with Ubuntu Pro or Ubuntu Pro (Infra-only) |
|
|
Patches: upstream: https://github.com/ImageMagick/ImageMagick6/commit/27d3ddedb73f63fa984ff5b4d66e07eef654070f upstream: https://github.com/ImageMagick/ImageMagick6/commit/e16a98540228f707a718dd09ac0b8cacd2a25d49 |
||
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 6.1 |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | Required |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | Low |
| Availability impact | High |
| Vector | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H |