php crash in iconv_substr() function
Published Sep 10, 2007
5.0
MEDIUMCVSS 2.0
EPSS 3.63%
Description
The iconv_substr function in PHP 5.2.4 and earlier allows context-dependent attackers to cause (1) a denial of service (application crash) via a long string in the charset parameter, probably also requiring a long string in the str parameter; or (2) a denial of service (temporary application hang) via a long string in the str parameter. NOTE: this might not be a vulnerability in most web server environments that support multiple threads, unless these issues can be demonstrated for code execution.
Affected products
Remediation
Red Hat statement
We do not consider this to be a security issue. For more information please see https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=169857#c1 and https://www.php.net/security-note.php
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.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (16 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 3.63% (0.03628) | 89.17th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.63% (0.03628) | 88.02th | v5 (v2026.06.15) |
| May 28, 2025 | 1.30% (0.01304) | 78.74th | v4 (v2025.03.14) |
| Mar 29, 2025 | 2.32% (0.02319) | 74.63th | v4 (v2025.03.14) |
| Mar 17, 2025 | 1.07% (0.01067) | 76.17th | v4 (v2025.03.14) |
| Dec 12, 2024 | 5.60% (0.05604) | 93.55th | v3 (v2023.03.01) |
| Jul 14, 2024 | 5.60% (0.05604) | 93.33th | v3 (v2023.03.01) |
| Jun 6, 2024 | 4.49% (0.04487) | 92.46th | v3 (v2023.03.01) |
| Apr 29, 2024 | 4.65% (0.04649) | 92.50th | v3 (v2023.03.01) |
| Mar 22, 2024 | 3.17% (0.03169) | 90.92th | v3 (v2023.03.01) |
| Feb 12, 2024 | 2.26% (0.02260) | 89.24th | v3 (v2023.03.01) |
| Sep 16, 2023 | 1.54% (0.01543) | 85.60th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.31% (0.01308) | 83.79th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.23% (0.04229) | 87.47th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.23% (0.04229) | 86.19th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.23% (0.04229) | 69.94th | v2 (v2022.01.01) |
References (14)
- http://osvdb.org/38917 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/27102 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/27659 third-party-advisoryx_refsource_SECUNIA
- http://secunia.com/advisories/30040 third-party-advisoryx_refsource_SECUNIA
- http://securityreason.com/securityalert/3115 third-party-advisoryx_refsource_SREASON
- http://wiki.rpath.com/wiki/Advisories:rPSA-2007-0242 x_refsource_CONFIRM
- http://www.gentoo.org/security/en/glsa/glsa-200710-02.xml vendor-advisoryx_refsource_GENTOO
- http://www.securityfocus.com/archive/1/478637/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/archive/1/491693/100/0/threaded vendor-advisoryx_refsource_HP
- https://access.redhat.com/security/cve/CVE-2007-4783 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=285891 Issue Tracking
- https://issues.rpath.com/browse/RPL-1943 x_refsource_CONFIRM
- https://nvd.nist.gov/vuln/detail/CVE-2007-4783
- https://www.cve.org/CVERecord?id=CVE-2007-4783
Change history (0)
No recorded changes yet.