GD Graphics Library up to 2.2.4 gd_color_match.c gdImageColorMatch memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability has been found in GD Graphics Library up to 2.2.4 and classified as critical. Affected by this vulnerability is the function gdImageColorMatch of the file gd_color_match.c. This manipulation causes memory corruption. This vulnerability appears as CVE-2019-6977. The attack may be initiated remotely. In addition, an exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in GD Graphics Library up to 2.2.4 (Image Processing Software). It has been declared as critical. Affected by this vulnerability is the function gdImageColorMatch of the file gd_color_match.c. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

gdImageColorMatch in gd_color_match.c in the GD Graphics Library (aka LibGD) 2.2.5, as used in the imagecolormatch function in PHP before 5.6.40, 7.x before 7.1.26, 7.2.x before 7.2.14, and 7.3.x before 7.3.1, has a heap-based buffer overflow. This can be exploited by an attacker who is able to trigger imagecolormatch calls with crafted image data.

The bug was discovered 01/15/2019. The weakness was presented 01/27/2019 (Website). The advisory is shared at php.net. This vulnerability is known as CVE-2019-6977 since 01/26/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a public exploit are known.

It is possible to download the exploit at packetstormsecurity.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 121510 (PHP 7.1.x < 7.1.26 Multiple vulnerabilities.), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176579 (Debian Security Update for libgd2 (DSA 4384-1)).

Upgrading to version 2.2.5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (121510) and SecurityFocus (BID 106731†). See VDB-67740, VDB-90573, VDB-90611 and VDB-90612 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.7

VulDB Base Score: 7.3
VulDB Temp Score: 6.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 121510
Nessus Name: PHP 7.1.x < 7.1.26 Multiple vulnerabilities.
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GD Graphics Library 2.2.5

Timelineinfo

01/10/2019 🔍
01/15/2019 +5 days 🔍
01/26/2019 +11 days 🔍
01/26/2019 +0 days 🔍
01/26/2019 +0 days 🔍
01/27/2019 +1 days 🔍
01/27/2019 +0 days 🔍
01/31/2019 +4 days 🔍
06/26/2024 +1973 days 🔍

Sourcesinfo

Advisory: RHSA-2019:2519
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-6977 (🔍)
GCVE (CVE): GCVE-0-2019-6977
GCVE (VulDB): GCVE-100-130273
SecurityFocus: 106731 - LibGD CVE-2019-6977 Heap Buffer Overflow Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 01/27/2019 16:13
Updated: 06/26/2024 12:21
Changes: 01/27/2019 16:13 (73), 05/06/2020 11:52 (5), 07/03/2023 14:51 (5), 06/26/2024 12:21 (21)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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