CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.9	$0-$5k	0.00

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 are known, but no exploit is available.

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 vulnerability database at Tenable (121510). See 67740, 90573, 90611 and 90612 for similar entries.

Productinfo

Type

• Image Processing Software

Name

• GD Graphics Library

Version

• 2.2.0
• 2.2.1
• 2.2.2
• 2.2.3
• 2.2.4

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

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

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

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 🔍
07/03/2023 +1614 days 🔍

Sourcesinfo

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

CVE: CVE-2019-6977 (🔍)
SecurityFocus: 106731 - LibGD CVE-2019-6977 Heap Buffer Overflow Vulnerability

See also: 🔍

Entryinfo

Created: 01/27/2019 16:13
Updated: 07/03/2023 14:51
Changes: 01/27/2019 16:13 (73), 05/06/2020 11:52 (5), 07/03/2023 14:51 (5)
Complete: 🔍

Discussion

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