CVE-2011-1092

PHP < 5.3.6 - Denial of Service and Memory Disclosure via shmop_read Integer Overflow

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2011-1092. PoCs published by Jose Carlos Norte.

AI-analyzed exploit summary This exploit demonstrates an integer overflow vulnerability in PHP versions <=5.3.5, leading to a denial-of-service (DoS) condition by attempting to allocate an excessively large shared memory segment. The code checks for vulnerability by reading a large value from shared memory.

Description

Integer overflow in ext/shmop/shmop.c in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (crash) and possibly read sensitive memory via a large third argument to the shmop_read function.

Exploits (1)

exploitdb WORKING POC VERIFIED
by Jose Carlos Norte · phpdoslinux
https://www.exploit-db.com/exploits/16966

This exploit demonstrates an integer overflow vulnerability in PHP versions <=5.3.5, leading to a denial-of-service (DoS) condition by attempting to allocate an excessively large shared memory segment. The code checks for vulnerability by reading a large value from shared memory.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: PHP <=5.3.5
No auth needed
Prerequisites: PHP with shared memory support enabled
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (18)

Core 18
Core References
Vendor Advisory x_refsource_confirm
http://www.php.net/ChangeLog-5.php
Vendor Advisory x_refsource_confirm
http://www.php.net/archive/2011.php
Issue Tracking x_refsource_confirm
https://bugzilla.redhat.com/show_bug.cgi?id=683183
Mailing List vendor-advisory x_refsource_hp
http://marc.info/?l=bugtraq&m=133469208622507&w=2
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/65988
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/8130
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/46786
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2011:053
Release Notes x_refsource_confirm
http://www.php.net/releases/5_3_6.php
Mailing List vendor-advisory x_refsource_apple
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
Exploit, Patch mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/03/08/11
Vendor Advisory vendor-advisory x_refsource_mandriva
http://www.mandriva.com/security/advisories?name=MDVSA-2011:052
Exploit exploit x_refsource_exploit-db
http://www.exploit-db.com/exploits/16966
Exploit, Patch mailing-list x_refsource_mlist
http://www.openwall.com/lists/oss-security/2011/03/08/9
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2011/0744
Vendor Advisory x_refsource_confirm
http://support.apple.com/kb/HT5002
Various Sources x_refsource_confirm
http://bugs.php.net/bug.php?id=54193

Scores

EPSS 0.1788
EPSS Percentile 96.8%

Details

CWE
CWE-189
Status published
Products (45)
php/php 1.0
php/php 2.0
php/php 2.0b10
php/php 3.0
php/php 3.0.1
php/php 3.0.2
php/php 3.0.3
php/php 3.0.4
php/php 3.0.5
php/php 3.0.6
... and 35 more
Published Mar 15, 2011
Tracked Since Feb 18, 2026