PHP 5.1/5.1.0/5.1.1/5.1.2/5.1.4 GD Extension ext/gd/libgd/gd_gif_in.c lwzreadbyte_ memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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4.8$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in PHP 5.1/5.1.0/5.1.1/5.1.2/5.1.4. This affects the function lwzreadbyte_ in the library ext/gd/libgd/gd_gif_in.c of the component GD Extension. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2006-4484. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP 5.1/5.1.0/5.1.1/5.1.2/5.1.4 (Programming Language Software) and classified as critical. This issue affects the function lwzreadbyte_ in the library ext/gd/libgd/gd_gif_in.c of the component GD Extension. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. The summary by CVE is:

Buffer overflow in the LWZReadByte_ function in ext/gd/libgd/gd_gif_in.c in the GD extension in PHP before 5.1.5 allows remote attackers to have an unknown impact via a GIF file with input_code_size greater than MAX_LWZ_BITS, which triggers an overflow when initializing the table array.

The bug was discovered 08/17/2006. The weakness was published 08/31/2006 (Website). The advisory is shared at php.net. The identification of this vulnerability is CVE-2006-4484 since 08/31/2006. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

The exploit is available at securityfocus.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 14 days. During that time the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 67657 (Oracle Linux 4 / 5 : gd (ELSA-2008-0146)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 165709 (SUSE Enterprise Linux Security Update (SUSE-SR:2008:005)).

Upgrading to version 5.1.5 eliminates this vulnerability. A possible mitigation has been published 2 years after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (40953), Tenable (67657), SecurityFocus (BID 19582†), OSVDB (28002†) and Secunia (SA21546†). Similar entries are available at VDB-2429, VDB-2469, VDB-2468 and VDB-2467. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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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: 67657
Nessus Name: Oracle Linux 4 / 5 : gd (ELSA-2008-0146)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 57375
OpenVAS Name: FreeBSD Ports: php4, php5
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: PHP 5.1.5

Timelineinfo

08/17/2006 🔍
08/18/2006 +1 days 🔍
08/31/2006 +13 days 🔍
08/31/2006 +0 days 🔍
08/31/2006 +0 days 🔍
08/31/2006 +0 days 🔍
09/18/2006 +18 days 🔍
10/05/2006 +17 days 🔍
02/28/2008 +511 days 🔍
07/12/2013 +1961 days 🔍
03/12/2015 +608 days 🔍
07/05/2019 +1576 days 🔍

Sourcesinfo

Product: php.org

Advisory: php.net
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2006-4484 (🔍)
GCVE (CVE): GCVE-0-2006-4484
GCVE (VulDB): GCVE-100-32045

OVAL: 🔍

X-Force: 40953
SecurityFocus: 19582 - PHP Multiple Input Validation Vulnerabilities
Secunia: 21546
OSVDB: 28002 - CVE-2006-4484 - PHP - Buffer Overflow Issue
SecurityTracker: 1016984
Vulnerability Center: 12711 - PHP Buffer Overflow via Gif File input_code_size, Low
Vupen: ADV-2006-3318

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

Entryinfo

Created: 03/12/2015 15:51
Updated: 07/05/2019 14:35
Changes: 03/12/2015 15:51 (81), 07/05/2019 14:35 (13)
Complete: 🔍
Cache ID: 216:DDC:103

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