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Fencer Intel
high 7.5

CVE-2011-1148 json

Use-after-free vulnerability in the substr_replace function in PHP 5.3.6 and earlier allows context-dependent attackers to cause a denial o…

published 2011-03-18 15 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1162

cvss
7.5
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

Use-after-free vulnerability in the substr_replace function in PHP 5.3.6 and earlier allows context-dependent attackers to cause a denial of service (memory corruption) or possibly have unspecified other impact by using the same variable for multiple arguments.

Patch / fix

  • php RHEL 5 5.1.6-27.el5_7.4
  • php-gd RHEL 5 5.1.6-27.el5_7.4
  • php-cli RHEL 5 5.1.6-27.el5_7.4
  • php-dba RHEL 5 5.1.6-27.el5_7.4
  • php-pdo RHEL 5 5.1.6-27.el5_7.4
  • php-xml RHEL 5 5.1.6-27.el5_7.4
  • php-imap RHEL 5 5.1.6-27.el5_7.4
  • php-ldap RHEL 5 5.1.6-27.el5_7.4

red hat advisories RHSA-2012:0033RHSA-2011:1423

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2011-1148 updated cvss 6.8

php: use-after-free vulnerability in substr_replace()

  • Red Hat Enterprise Linux (v. 5 server) php 5.1.6-27.el5_7.4, php53 5.3.3-1.el5_7.3, php-gd 5.1.6-27.el5_7.4, php-cli 5.1.6-27.el5_7.4, php-dba 5.1.6-27.el5_7.4, php-pdo 5.1.6-27.el5_7.4, +32 more
    fixed: vendor fix RHSA-2012:0033
  • Red Hat Enterprise Linux Server (v. 6) php 5.3.3-3.el6_1.3, php-gd 5.3.3-3.el6_1.3, php-cli 5.3.3-3.el6_1.3, php-pdo 5.3.3-3.el6_1.3, php-xml 5.3.3-3.el6_1.3, php-ldap 5.3.3-3.el6_1.3, +6 more Red Hat Enterprise Linux Server Optional (v. 6) php 5.3.3-3.el6_1.3, php-dba 5.3.3-3.el6_1.3, php-zts 5.3.3-3.el6_1.3, php-imap 5.3.3-3.el6_1.3, php-intl 5.3.3-3.el6_1.3, php-snmp 5.3.3-3.el6_1.3, +8 more
    fixed: vendor fix RHSA-2011:1423
  • Red Hat RHEL Desktop Workstation (v. 5 client) php 5.1.6-27.el5_7.4, php53 5.3.3-1.el5_7.3, php-gd 5.1.6-27.el5_7.4, php-cli 5.1.6-27.el5_7.4, php-dba 5.1.6-27.el5_7.4, php-pdo 5.1.6-27.el5_7.4, +32 more
    fixed: vendor fix RHSA-2012:0033
  • Red Hat Enterprise Linux 4 php
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

4.74% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 2.0 7.5 AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-399 Resource Management Errors
Technology feeds

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.