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CVE-2011-1471

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context...

4.3 MediumPublic exploitFix available

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Exploit likelihood

13.2%Up 2.2 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 4.3

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Record
CVE-2011-1471
CVSS 2.0
4.3 MediumAV:N/AC:M/Au:N/C:N/I:N/A:P
Weakness
CWE-189
Updated
2026-11-02
CVE List No score

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Record
CVE-2011-1471
Updated
2026-11-02
EUVDEUVD-2011-1476 No score

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Record
EUVD-2011-1476
Updated
2026-11-03
GitHub AdvisoriesGHSA-h5g9-76vr-9xfh No score

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context...

Integer signedness error in zip_stream.c in the Zip extension in PHP before 5.3.6 allows context-dependent attackers to cause a denial of service (CPU consumption) via a malformed archive file that triggers errors in zip_fread function calls.

Record
GHSA-h5g9-76vr-9xfh
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
php5
Debian:5.0
 before 5.2.6.dfsg.1-1+lenny12, plus listed versions
5.2.6.dfsg.1-1+lenny105.2.6.dfsg.1-1+lenny115.2.6.dfsg.1-1+lenny25.2.6.dfsg.1-1+lenny35.2.6.dfsg.1-1+lenny45.2.6.dfsg.1-1+lenny65.2.6.dfsg.1-1+lenny85.2.6.dfsg.1-1+lenny9
5.2.6.dfsg.1-1+lenny12
php5
Debian:6.0
 before 5.3.3-7+squeeze3, plus listed versions
5.3.3-75.3.3-7+squeeze15.3.3-7+squeeze2
5.3.3-7+squeeze3
php53
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-bcmath
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-cli
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-common
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-dba
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-debuginfo
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-devel
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-gd
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
Show 63 moreShow less
Affected packages
PackageAffectedFixed
php53-imap
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-intl
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-ldap
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-mbstring
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-mysql
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-odbc
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-pdo
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-pgsql
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-process
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-pspell
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-snmp
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-soap
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-xml
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-xmlrpc
Red Hat:enterprise_linux:5::client_workstation
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-bcmath
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-cli
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-common
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-dba
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-debuginfo
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-devel
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-gd
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-imap
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-intl
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-ldap
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-mbstring
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-mysql
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-odbc
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-pdo
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-pgsql
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-process
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-pspell
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-snmp
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-soap
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-xml
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php53-xmlrpc
Red Hat:enterprise_linux:5::server
 before 0:5.3.3-1.el5_7.3
0:5.3.3-1.el5_7.3
php
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-cli
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-common
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-debuginfo
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-gd
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-ldap
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-mysql
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-odbc
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-pdo
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-pgsql
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-soap
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-xml
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-xmlrpc
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-bcmath
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-dba
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-devel
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-embedded
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-enchant
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-imap
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-intl
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-mbstring
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-process
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-pspell
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-recode
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-snmp
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-tidy
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3
php-zts
Red Hat:enterprise_linux:6::server
 before 0:5.3.3-3.el6_1.3
0:5.3.3-3.el6_1.3

Public exploits

Links only. Every CVE stores no exploit code.

Public exploits
SourceLinkDate
Exploit-DBPHP < 5.3.6 'Zip' Extension - 'zip_fread()' Denial of Service2011-03-10

History

History
RecordedChangedSources
aliasesEUVD
first indexedCVE List, Exploit-DB, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1471 is a medium vulnerability (CVSS 4.3) in Php, published March 20, 2011. Public exploit code exists. EPSS puts the chance of exploitation in the next 30 days at 13.2%, the 96th percentile. Fixed in php5 5.2.6.dfsg.1-1+lenny12.

References

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