GD Graphics Library up to 2.2.3 TIFF Image dynamicGetbuf out-of-bounds

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.
5.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in GD Graphics Library up to 2.2.3. The impacted element is the function dynamicGetbuf of the component TIFF Image Handler. Such manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2016-6911. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in GD Graphics Library up to 2.2.3 (Image Processing Software) and classified as problematic. Affected by this issue is the function dynamicGetbuf of the component TIFF Image Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. CVE summarizes:

The dynamicGetbuf function in the GD Graphics Library (aka libgd) before 2.2.4 allows remote attackers to cause a denial of service (out-of-bounds read) via a crafted TIFF image.

The bug was discovered 11/29/2016. The weakness was released 01/26/2017 by Ibrahim el-sayed (Website). The advisory is available at github.com. This vulnerability is handled as CVE-2016-6911 since 08/22/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 58 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 900040 , which helps to determine the existence of the flaw in a target environment. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276304 (Fedora Security Update for gd (FEDORA-2016-722c0afc64) and (FEDORA-2016-e45a7e7b13)).

Upgrading to version 2.2.4 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (900040) and SecurityFocus (BID 95840†). Entries connected to this vulnerability are available at VDB-92250, VDB-95034, VDB-95943 and VDB-96027. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Nessus ID: 900040
Nessus File: 🔍

OpenVAS ID: 703693
OpenVAS Name: Debian Security Advisory DSA 3693-1 (libgd2 - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: GD Graphics Library 2.2.4
Patch: github.com

Timelineinfo

08/22/2016 🔍
11/29/2016 +99 days 🔍
01/26/2017 +58 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
01/26/2017 +0 days 🔍
11/04/2022 +2108 days 🔍

Sourcesinfo

Advisory: 4859d69e07504d4b0a4bdf9bcb4d9e3769ca35ae
Researcher: Ibrahim el-sayed
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-6911 (🔍)
GCVE (CVE): GCVE-0-2016-6911
GCVE (VulDB): GCVE-100-96026
SecurityFocus: 95840 - libgd 'dynamicGetbuf()' Denial of Service Vulnerability
OSVDB: - CVE-2016-6911 - GD Graphics Library - Out-of-Bounds Read Issue

See also: 🔍

Entryinfo

Created: 01/26/2017 22:01
Updated: 11/04/2022 09:33
Changes: 01/26/2017 22:01 (76), 11/04/2022 09:33 (5)
Complete: 🔍
Cache ID: 216:458:103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

Might our Artificial Intelligence support you?

Check our Alexa App!