National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2017-7890 Detail

Current 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.

Source:  MITRE
Description Last Modified:  08/02/2017
View Analysis Description

Impact

CVSS v3.0 Severity and Metrics:

Base Score: 6.5 MEDIUM
Vector: AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N (V3 legend)
Impact Score: 3.6
Exploitability Score: 2.8


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

CVSS v2.0 Severity and Metrics:

Base Score: 4.3 MEDIUM
Vector: (AV:N/AC:M/Au:N/C:P/I:N/A:N) (V2 legend)
Impact Subscore: 2.9
Exploitability Subscore: 8.6


Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (AU): None
Confidentiality (C): Partial
Integrity (I): None
Availability (A): None
Additional Information:
Victim must voluntarily interact with attack mechanism
Allows unauthorized disclosure of information

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://php.net/ChangeLog-5.php Release Notes Vendor Advisory
http://php.net/ChangeLog-7.php Release Notes Vendor Advisory
http://www.debian.org/security/2017/dsa-3938
http://www.securityfocus.com/bid/99492 Third Party Advisory VDB Entry
https://access.redhat.com/errata/RHSA-2018:0406
https://access.redhat.com/errata/RHSA-2018:1296
https://bugs.php.net/bug.php?id=74435 Patch Vendor Advisory
https://bugs.php.net/patch-display.php?bug=74435&patch=fix-74435-php-7.0&revision=1497970038 Issue Tracking Patch Vendor Advisory
https://security.netapp.com/advisory/ntap-20180112-0001/
https://www.tenable.com/security/tns-2017-12

Technical Details

Vulnerability Type (View All)

  • Information Leak / Disclosure (CWE-200)

Change History

7 change records found - show changes

Quick Info

CVE Dictionary Entry:
CVE-2017-7890
NVD Published Date:
08/02/2017
NVD Last Modified:
05/03/2018