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Fencer Intel
medium 5.0

CVE-2010-4156 json

The mb_strcut function in Libmbfl 1.1.0, as used in PHP 5.3.x through 5.3.3, allows context-dependent attackers to obtain potentially sensi…

published 15y ago modified 4mo ago also EUVD-2010-4132

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
12.8%
EPSS 12.8% chance of exploitation in 30 days, percentile 96%
public exploits
1
Exploit-DB

Summary

The mb_strcut function in Libmbfl 1.1.0, as used in PHP 5.3.x through 5.3.3, allows context-dependent attackers to obtain potentially sensitive information via a large value of the third parameter (aka the length parameter).

Patch / fix

  • php53 RHEL 5 5.3.3-1.el5_6.1
  • php53-gd RHEL 5 5.3.3-1.el5_6.1
  • php53-cli RHEL 5 5.3.3-1.el5_6.1
  • php53-dba RHEL 5 5.3.3-1.el5_6.1
  • php53-pdo RHEL 5 5.3.3-1.el5_6.1
  • php53-xml RHEL 5 5.3.3-1.el5_6.1
  • php53-imap RHEL 5 5.3.3-1.el5_6.1
  • php53-intl RHEL 5 5.3.3-1.el5_6.1

red hat advisories RHSA-2011:0196

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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-2010-4156 updated cvss 4.3

php information disclosure via mb_strcut()

  • Red Hat Enterprise Linux (v. 5.6.z server) php53 5.3.3-1.el5_6.1, php53-gd 5.3.3-1.el5_6.1, php53-cli 5.3.3-1.el5_6.1, php53-dba 5.3.3-1.el5_6.1, php53-pdo 5.3.3-1.el5_6.1, php53-xml 5.3.3-1.el5_6.1, +14 more
    fixed: vendor fix RHSA-2011:0196
  • Red Hat Enterprise Linux 4 php Red Hat Enterprise Linux 5 php Red Hat Enterprise Linux 6 php, php-gd, php-cli, php-dba, php-fpm, php-pdo, +20 more
    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

Timeline

  1. First public exploit (EDB-34979)
  2. Published

Exploit prediction

12.79% chance of exploitation in the next 30 days, higher than 96% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • EDB-34979 PHP 5.3.x - 'mb_strcut()' Information Disclosure remote, 2010-11-07
  • openwall.com http://www.openwall.com/lists/oss-security/2010/11/08/13 referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2010/11/07/2 referenced PoC, tagged "exploit" by a source, unverified
  • securityfocus.com http://www.securityfocus.com/bid/44727 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Classification

Weakness
  • CWE-20 Improper Input Validation

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.