CVE-2017-7890

Severity CVSS v4.0:

Pending analysis

Type:

CWE-200 Information Leak / Disclosure

Publication date:

02/08/2017

Last modified:

20/04/2025

Description

The GIF decoding function gdImageCreateFromGifCtx in gd_gif_in.c in the GD Graphics Library (aka libgd), as used in PHP before 5.6.31 and 7.x before 7.1.7, does not zero colorMap arrays before use. A specially crafted GIF image could use the uninitialized tables to read ~700 bytes from the top of the stack, potentially disclosing sensitive information.

Impact

Vector 3.x

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): None
Availability (A): None

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vector 2.0

AV:N/AC:M/Au:N/C:P/I:N/A:N CVSS v2.0 Severity and Metrics:

Base Score: 4.30 MEDIUM
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N

Attack Vector (AV): Network
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): None
Availability (A): None

Base Score 2.0

4.30

Severity 2.0

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:php:php::::::::		5.6.30 (including)
cpe:2.3:a:php:php:7.0.0:::::::*
cpe:2.3:a:php:php:7.0.1:::::::*
cpe:2.3:a:php:php:7.0.2:::::::*
cpe:2.3:a:php:php:7.0.3:::::::*
cpe:2.3:a:php:php:7.0.4:::::::*
cpe:2.3:a:php:php:7.0.5:::::::*
cpe:2.3:a:php:php:7.0.6:::::::*
cpe:2.3:a:php:php:7.0.7:::::::*
cpe:2.3:a:php:php:7.0.8:::::::*
cpe:2.3:a:php:php:7.0.9:::::::*
cpe:2.3:a:php:php:7.0.10:::::::*
cpe:2.3:a:php:php:7.0.11:::::::*
cpe:2.3:a:php:php:7.0.12:::::::*
cpe:2.3:a:php:php:7.0.13:::::::*

To consult the complete list of CPE names with products and versions, see this page

CPE	From	Up to
cpe:2.3:a:php:php::::::::		5.6.30 (including)
cpe:2.3:a:php:php:7.0.0:::::::*
cpe:2.3:a:php:php:7.0.1:::::::*
cpe:2.3:a:php:php:7.0.2:::::::*
cpe:2.3:a:php:php:7.0.3:::::::*
cpe:2.3:a:php:php:7.0.4:::::::*
cpe:2.3:a:php:php:7.0.5:::::::*
cpe:2.3:a:php:php:7.0.6:::::::*
cpe:2.3:a:php:php:7.0.7:::::::*
cpe:2.3:a:php:php:7.0.8:::::::*
cpe:2.3:a:php:php:7.0.9:::::::*
cpe:2.3:a:php:php:7.0.10:::::::*
cpe:2.3:a:php:php:7.0.11:::::::*
cpe:2.3:a:php:php:7.0.12:::::::*
cpe:2.3:a:php:php:7.0.13:::::::*

CVE-2017-7890

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools