PHP up to 4.3.10/5.0.3 realpath information disclosure

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

Summaryinfo

A vulnerability identified as critical has been detected in PHP up to 4.3.10/5.0.3. This vulnerability affects the function realpath. Performing a manipulation results in information disclosure. This vulnerability is cataloged as CVE-2004-1018. It is possible to initiate the attack remotely. Furthermore, there is an exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in PHP up to 4.3.10/5.0.3 (Programming Language Software). It has been classified as critical. This affects the function realpath. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

Multiple integer handling errors in PHP before 4.3.10 allow attackers to bypass safe mode restrictions, cause a denial of service, or execute arbitrary code via (1) a negative offset value to the shmop_write function, (2) an "integer overflow/underflow" in the pack function, or (3) an "integer overflow/underflow" in the unpack function. NOTE: this issue was originally REJECTed by its CNA before publication, but that decision is in active dispute. This candidate may change significantly in the future as a result of further discussion.

The weakness was shared 12/16/2004 by Stefan Esser with isec (Website). It is possible to read the advisory at php.net. This vulnerability is uniquely identified as CVE-2004-1018 since 11/04/2004. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details and a public exploit are known. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The exploit is shared for download at securityfocus.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 18091 (Mandrake Linux Security Advisory : php (MDKSA-2005:072)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Mandriva Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 12144 (PHP Multiple Remote Vulnerabilities).

Upgrading eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at php.net. The best possible mitigation is suggested to be upgrading to the latest version. A possible mitigation has been published 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (18515), Exploit-DB (24854), Tenable (18091), SecurityFocus (BID 12045†) and OSVDB (12411†). Further details are available at hardened-php.net. The entries VDB-1060, VDB-1056, VDB-1055 and VDB-1062 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

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: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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

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Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 18091
Nessus Name: Mandrake Linux Security Advisory : php (MDKSA-2005:072)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Exploit-DB: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: php.net

Timelineinfo

11/04/2004 🔍
12/16/2004 +42 days 🔍
12/16/2004 +0 days 🔍
12/16/2004 +0 days 🔍
12/20/2004 +3 days 🔍
01/03/2005 +14 days 🔍
01/10/2005 +7 days 🔍
04/18/2005 +98 days 🔍
04/19/2005 +1 days 🔍
01/28/2025 +7224 days 🔍

Sourcesinfo

Product: php.org

Advisory: php.net
Researcher: Stefan Esser
Organization: isec
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2004-1018 (🔍)
GCVE (CVE): GCVE-0-2004-1018
GCVE (VulDB): GCVE-100-1059

OVAL: 🔍

X-Force: 18515
SecurityFocus: 12045 - PHP Shared Memory Module Offset Memory Corruption Vulnerability
Secunia: 13481 - PHP Multiple Vulnerabilities, Highly Critical
OSVDB: 12411 - PHP unpack() Function Heap Information Leak

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

Entryinfo

Created: 01/03/2005 10:23
Updated: 01/28/2025 19:38
Changes: 01/03/2005 10:23 (87), 06/30/2019 16:36 (3), 01/28/2025 19:38 (18)
Complete: 🔍
Cache ID: 216:D80:103

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