mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script
Published Jun 28, 2005
7.5
HIGHCVSS 3.1
EPSS 17.41%
Description
mod_cgi in Apache 2.0.39 and 2.0.40 allows local users and possibly remote attackers to cause a denial of service (hang and memory consumption) by causing a CGI script to send a large amount of data to stderr, which results in a read/write deadlock between httpd and the CGI script.
Affected products
No data.
- 2.0.39
- 2.0.40
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the versions of Apache HTTP server as shipped with Red Hat Enterprise Linux 2.1, 3, or 4.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
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 (18 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 17.41% (0.17408) | 97.04th | v5 (v2026.06.15) |
| Aug 11, 2026 | 17.41% (0.17408) | 96.83th | v5 (v2026.06.15) |
| Jul 18, 2026 | 15.25% (0.15248) | 96.39th | v5 (v2026.06.15) |
| Jun 15, 2026 | 17.41% (0.17408) | 96.73th | v5 (v2026.06.15) |
| Dec 28, 2025 | 2.92% (0.02915) | 85.96th | v4 (v2025.03.14) |
| Dec 27, 2025 | 1.79% (0.01787) | 82.31th | v4 (v2025.03.14) |
| Mar 30, 2025 | 3.02% (0.03015) | 85.40th | v4 (v2025.03.14) |
| Mar 29, 2025 | 8.94% (0.08938) | 87.50th | v4 (v2025.03.14) |
| Mar 19, 2025 | 3.02% (0.03015) | 85.10th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.93% (0.00928) | 74.47th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.38% (0.00381) | 73.82th | v3 (v2023.03.01) |
| Jun 4, 2024 | 0.38% (0.00381) | 72.94th | v3 (v2023.03.01) |
| Feb 9, 2024 | 0.42% (0.00421) | 73.52th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.49% (0.00491) | 75.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.49% (0.00491) | 72.43th | v3 (v2023.03.01) |
| Mar 6, 2023 | 22.37% (0.22367) | 96.62th | v2 (v2022.01.01) |
| May 3, 2022 | 22.37% (0.22367) | 96.36th | v2 (v2022.01.01) |
| Feb 4, 2022 | 22.37% (0.22367) | 94.36th | v2 (v2022.01.01) |
References (12)
- http://cvs.apache.org/viewcvs.cgi/httpd-2.0/modules/generators/mod_cgi.c?r1=1.148.2.7&r2=1.148.2.8 x_refsource_CONFIRMBroken Link
- http://issues.apache.org/bugzilla/show_bug.cgi?id=10515 x_refsource_MISCIssue Tracking
- http://issues.apache.org/bugzilla/show_bug.cgi?id=22030 x_refsource_MISCIssue TrackingPatch
- http://marc.info/?l=apache-httpd-dev&m=103291952019514&w=2 mailing-listx_refsource_MLISTMailing List
- http://seclists.org/bugtraq/2002/Sep/0253.html mailing-listx_refsource_BUGTRAQExploitMailing ListThird Party Advisory
- http://securitytracker.com/id?1007823 vdb-entryx_refsource_SECTRACKBroken LinkPatchThird Party AdvisoryVDB Entry
- http://www.iss.net/security_center/static/10200.php vdb-entryx_refsource_XFBroken LinkPatch
- http://www.securityfocus.com/bid/5787 vdb-entryx_refsource_BIDBroken LinkExploitThird Party AdvisoryVDB Entry
- http://www.securityfocus.com/bid/8725 vdb-entryx_refsource_BIDBroken LinkPatchThird Party AdvisoryVDB Entry
- https://access.redhat.com/security/cve/CVE-2002-1850 Vendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2002-1850
- https://www.cve.org/CVERecord?id=CVE-2002-1850
Change history (0)
No recorded changes yet.