MEDIUM
php/libzip: segfault with FL_UNCHANGED on empty archive in zip_name_locate()
Published Mar 20, 2011
4.3
MEDIUMCVSS 2.0
EPSS 13.51%
Description
The _zip_name_locate function in zip_name_locate.c in the Zip extension in PHP before 5.3.6 does not properly handle a ZIPARCHIVE::FL_UNCHANGED argument, which might allow context-dependent attackers to cause a denial of service (NULL pointer dereference) via an empty ZIP archive that is processed with a (1) locateName or (2) statName operation.
Affected products
No data.
OR
- ≤ 5.3.5
- 1.0
- 2.0
- 2.0b10
- 3.0
- 3.0.1
- 3.0.2
- 3.0.3
- 3.0.4
- 3.0.5
- 3.0.6
- 3.0.7
- 3.0.8
- 3.0.9
- 3.0.10
- 3.0.11
- 3.0.12
- 3.0.13
- 3.0.14
- 3.0.15
- 3.0.16
- 3.0.17
- 3.0.18
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0.0
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.0.5
- 4.0.6
- 4.0.7
- 4.1.0
- 4.1.1
- 4.1.2
- 4.2.0
- 4.2.1
- 4.2.2
- 4.2.3
- 4.3.0
- 4.3.1
- 4.3.2
- 4.3.3
- 4.3.4
- 4.3.5
- 4.3.6
- 4.3.7
- 4.3.8
- 4.3.9
- 4.3.10
- 4.3.11
- 4.4.0
- 4.4.1
- 4.4.2
- 4.4.3
- 4.4.4
- 4.4.5
- 4.4.6
- 4.4.7
- 4.4.8
- 4.4.9
- 5.0.0
- 5.0.0
- 5.0.0
- 5.0.0
- 5.0.0
- 5.0.0
- 5.0.0
- 5.0.0
- 5.0.1
- 5.0.2
- 5.0.3
- 5.0.4
- 5.0.5
- 5.1.0
- 5.1.1
- 5.1.2
- 5.1.3
- 5.1.4
- 5.1.5
- 5.1.6
- 5.2.0
- 5.2.1
- 5.2.2
- 5.2.3
- 5.2.4
- 5.2.4
- 5.2.5
- 5.2.6
- 5.2.7
- 5.2.8
- 5.2.9
- 5.2.10
- 5.2.11
- 5.2.12
- 5.2.13
- 5.2.14
- 5.2.15
- 5.2.16
- 5.2.17
- 5.3.0
- 5.3.1
- 5.3.2
- 5.3.3
- 5.3.4
No data.
Red Hat Enterprise Linux 5
php53
Affected
Red Hat Enterprise Linux 6
libzip
Affected
Red Hat Enterprise Linux 6
php
Affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | php53 | Affected | n/a |
| Red Hat Enterprise Linux 6 | libzip | Affected | n/a |
| Red Hat Enterprise Linux 6 | php | Affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
13.51% 0.13514
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.13514
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (41 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 13.51% (0.13514) | 96.34th | v5 (v2026.06.15) |
| Jun 15, 2026 | 13.51% (0.13514) | 95.95th | v5 (v2026.06.15) |
| Feb 1, 2026 | 7.81% (0.07808) | 91.79th | v4 (v2025.03.14) |
| Jan 4, 2026 | 9.30% (0.09302) | 92.49th | v4 (v2025.03.14) |
| Jan 1, 2026 | 7.81% (0.07808) | 91.74th | v4 (v2025.03.14) |
| Dec 28, 2025 | 9.30% (0.09302) | 92.47th | v4 (v2025.03.14) |
| Dec 27, 2025 | 12.91% (0.12915) | 93.86th | v4 (v2025.03.14) |
| Dec 4, 2025 | 9.30% (0.09302) | 92.44th | v4 (v2025.03.14) |
| Dec 1, 2025 | 7.81% (0.07808) | 91.67th | v4 (v2025.03.14) |
| Nov 4, 2025 | 9.91% (0.09914) | 92.68th | v4 (v2025.03.14) |
| Nov 1, 2025 | 8.33% (0.08334) | 91.91th | v4 (v2025.03.14) |
| Oct 28, 2025 | 9.91% (0.09914) | 92.67th | v4 (v2025.03.14) |
| Oct 27, 2025 | 13.72% (0.13720) | 94.00th | v4 (v2025.03.14) |
| Oct 4, 2025 | 9.91% (0.09914) | 92.72th | v4 (v2025.03.14) |
| Oct 3, 2025 | 8.33% (0.08334) | 91.97th | v4 (v2025.03.14) |
| Oct 1, 2025 | 6.28% (0.06279) | 90.60th | v4 (v2025.03.14) |
| Sep 5, 2025 | 9.14% (0.09141) | 92.38th | v4 (v2025.03.14) |
| Sep 1, 2025 | 7.67% (0.07671) | 91.60th | v4 (v2025.03.14) |
| Aug 6, 2025 | 9.14% (0.09141) | 92.33th | v4 (v2025.03.14) |
| Aug 1, 2025 | 7.67% (0.07671) | 91.57th | v4 (v2025.03.14) |
| Jul 30, 2025 | 9.14% (0.09141) | 92.33th | v4 (v2025.03.14) |
| Jul 7, 2025 | 7.51% (0.07511) | 91.32th | v4 (v2025.03.14) |
| Jul 4, 2025 | 9.29% (0.09294) | 92.37th | v4 (v2025.03.14) |
| Jul 1, 2025 | 8.11% (0.08112) | 91.77th | v4 (v2025.03.14) |
| Jun 10, 2025 | 9.29% (0.09294) | 92.31th | v4 (v2025.03.14) |
| Jun 1, 2025 | 8.11% (0.08112) | 91.74th | v4 (v2025.03.14) |
| May 5, 2025 | 9.66% (0.09657) | 92.43th | v4 (v2025.03.14) |
| May 1, 2025 | 5.62% (0.05622) | 89.85th | v4 (v2025.03.14) |
| Apr 2, 2025 | 10.56% (0.10558) | 92.60th | v4 (v2025.03.14) |
| Apr 1, 2025 | 6.18% (0.06179) | 89.92th | v4 (v2025.03.14) |
| Mar 30, 2025 | 10.56% (0.10558) | 92.57th | v4 (v2025.03.14) |
| Mar 29, 2025 | 18.53% (0.18533) | 92.18th | v4 (v2025.03.14) |
| Mar 28, 2025 | 10.56% (0.10558) | 92.58th | v4 (v2025.03.14) |
| Mar 27, 2025 | 6.18% (0.06179) | 89.48th | v4 (v2025.03.14) |
| Mar 18, 2025 | 10.56% (0.10558) | 92.75th | v4 (v2025.03.14) |
| Mar 17, 2025 | 6.18% (0.06179) | 90.14th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.03% (0.03035) | 91.33th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.03% (0.03035) | 89.41th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.57% (0.12567) | 95.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.57% (0.12567) | 90.03th | v2 (v2022.01.01) |
Weaknesses (0)
No CWE recorded.
References (30)
- http://bugs.php.net/bug.php?id=53885 x_refsource_CONFIRMExploit
- http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html vendor-advisoryx_refsource_APPLE
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057709.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057710.html vendor-advisoryx_refsource_FEDORA
- http://lists.fedoraproject.org/pipermail/package-announce/2011-March/056642.html vendor-advisoryx_refsource_FEDORA
- http://lists.opensuse.org/opensuse-security-announce/2011-05/msg00005.html vendor-advisoryx_refsource_SUSE
- http://marc.info/?l=bugtraq&m=133469208622507&w=2 vendor-advisoryx_refsource_HP
- http://secunia.com/advisories/43621 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securityreason.com/achievement_securityalert/96 third-party-advisoryx_refsource_SREASONRES
- http://securityreason.com/securityalert/8146 third-party-advisoryx_refsource_SREASON
- http://support.apple.com/kb/HT5002 x_refsource_CONFIRM
- http://svn.php.net/viewvc/?view=revision&revision=307867 x_refsource_CONFIRMPatch
- http://www.debian.org/security/2011/dsa-2266 vendor-advisoryx_refsource_DEBIAN
- http://www.exploit-db.com/exploits/17004 exploitx_refsource_EXPLOIT-DB
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:052 vendor-advisoryx_refsource_MANDRIVA
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:053 vendor-advisoryx_refsource_MANDRIVA
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:099 vendor-advisoryx_refsource_MANDRIVA
- http://www.php.net/ChangeLog-5.php x_refsource_CONFIRM
- http://www.php.net/archive/2011.php x_refsource_CONFIRM
- http://www.php.net/releases/5_3_6.php x_refsource_CONFIRM
- http://www.securityfocus.com/archive/1/517065/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/46354 vdb-entryx_refsource_BID
- http://www.vupen.com/english/advisories/2011/0744 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0764 vdb-entryx_refsource_VUPENVendor Advisory
- http://www.vupen.com/english/advisories/2011/0890 vdb-entryx_refsource_VUPENVendor Advisory
- https://access.redhat.com/security/cve/CVE-2011-0421 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=688735 x_refsource_CONFIRMExploitPatchIssue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66173 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2011-0421
- https://www.cve.org/CVERecord?id=CVE-2011-0421
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner certcc
Published Mar 20, 2011
Updated Aug 6, 2024
Reserved Jan 11, 2011
Link CVE-2011-0421
CISA Vulnrichment
Updated n/a