php crypt function not re-entrant
Published May 24, 2007
9.3
HIGHCVSS 2.0
EPSS 2.86%
Description
PHP 4.x and 5.x before 5.2.1, when running on multi-threaded systems, does not ensure thread safety for libc crypt function calls using protection schemes such as a mutex, which creates race conditions that allow remote attackers to overwrite internal program memory and gain system access.
Affected products
No data.
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0
- 4.0.0
- 4.0.1
- 4.0.1
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.3
- 4.0.4
- 4.0.4
- 4.0.5
- 4.0.6
- 4.0.7
- 4.0.7
- 4.0.7
- 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
- 5.0
- 5.0
- 5.0
- 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
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. PHP is not built or supported in a multi-threaded environment in the packages distributed in Red Hat Enterprise Linux or Application Stack.
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:M/Au:N/C:C/I:C/A:C
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 (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 2.86% (0.02863) | 86.28th | v5 (v2026.06.15) |
| Jun 15, 2026 | 2.86% (0.02863) | 84.89th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.91% (0.00914) | 74.26th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.05% (0.03050) | 91.35th | v3 (v2023.03.01) |
| Mar 27, 2024 | 3.05% (0.03050) | 90.77th | v3 (v2023.03.01) |
| Feb 18, 2024 | 2.79% (0.02793) | 90.29th | v3 (v2023.03.01) |
| Jan 11, 2024 | 1.41% (0.01405) | 85.04th | v3 (v2023.03.01) |
| Dec 4, 2023 | 1.34% (0.01344) | 84.55th | v3 (v2023.03.01) |
| Oct 26, 2023 | 1.29% (0.01291) | 84.33th | v3 (v2023.03.01) |
| May 30, 2023 | 1.15% (0.01147) | 82.72th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.06% (0.01060) | 81.86th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
No CWE recorded.
References (9)
- http://blog.php-security.org/archives/82-Suhosin-0.9.20-and-crypt-Thread-Safety-Vulnerability.html x_refsource_MISC
- http://osvdb.org/36088 vdb-entryx_refsource_OSVDB
- http://secunia.com/advisories/25434 third-party-advisoryx_refsource_SECUNIA
- http://www.securityfocus.com/bid/24109 vdb-entryx_refsource_BID
- https://access.redhat.com/security/cve/CVE-2007-2844 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=241641 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/34601 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2007-2844
- https://www.cve.org/CVERecord?id=CVE-2007-2844
| Link | Providers | Tags |
|---|---|---|
| http://blog.php-security.org/archives/82-Suhosin-0.9.20-and-crypt-Thread-Safety-Vulnerability.html | x_refsource_MISC | |
| http://osvdb.org/36088 | vdb-entryx_refsource_OSVDB | |
| http://secunia.com/advisories/25434 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.securityfocus.com/bid/24109 | vdb-entryx_refsource_BID | |
| https://access.redhat.com/security/cve/CVE-2007-2844 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=241641 | Issue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/34601 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2007-2844 | ||
| https://www.cve.org/CVERecord?id=CVE-2007-2844 |
Change history (0)
No recorded changes yet.