CVE-2007-0774
HighPublic exploitStack-based buffer overflow in the map_uri_to_worker function (native/common/jk_uri_worker_map.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that…
Published Mar 4, 2007 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2007-0774
Key Facts
Patch immediately- CVE-2007-0774 is a high-severity vulnerability (CVSS 7.5 v2) affecting Tomcat Jk Web Server Connector (Apache), libapache-mod-jk (debian), mod_jk (redhat) and 1 more product.
- It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
- EPSS estimates a 82% probability of exploitation in the next 30 days.
- Fixed versions are available, including apache2-mod_jk 1.2.48-2.9, libapache-mod-jk 1:1.2.21-1, mod_jk 0:1.2.20-1.el4s1.2.
- Brandefense priority: patch immediately, because it is very likely to be exploited soon.
CVSS v2
7.5
AV:N/AC:L/Au:N/C:P/I:P/A:P
EPSS (30-day exploit likelihood)
82%
Higher than 99.6% of all scored CVEs
Exploited in the wild
No known
Not in a known-exploited catalog
Public exploit code
Available
Proof-of-concept or weaponized module
Get the full CVE-2007-0774 brief as a PDF
Every affected product and fixed release, exploitation status and a first 24 hours response checklist, emailed within minutes.
Description
Stack-based buffer overflow in the map_uri_to_worker function (native/common/jk_uri_worker_map.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that triggers the overflow in a URI worker map routine.
Affected Products
16 affected entries in total| Product | Affected versions | Fixed in |
|---|---|---|
| Tomcat Jk Web Server ConnectorApache | 1.2.19, 1.2.20 | n/a |
| libapache-mod-jkdebian | See advisory | 1:1.2.21-1 |
| mod_jkredhat | See advisory | 0:1.2.20-1jpp_1rh |
| apache2-mod_jksuse | See advisory | 1.2.48-2.9 |
Patched Releases
apache2-mod_jk
1.2.48-2.9
libapache-mod-jk
1:1.2.21-1
mod_jk
0:1.2.20-1.el4s1.2, 0:1.2.20-1jpp_1rh
Timeline
Publicly disclosed
Mar 4, 2007
Last updated
Aug 4, 2026
References
- advisoryRHSA-2007:0096
- advisoryRHSA-2007:0164
- advisoryhttps://security-tracker.debian.org/tracker/CVE-2007-0774
- advisoryhttp://www.zerodayinitiative.com/advisories/ZDI-07-008.html
- patchhttp://tomcat.apache.org/connectors-doc/miscellaneous/changelog.html
FAQ
Common Questions.
Stack-based buffer overflow in the map_uri_to_worker function (native/common/jk_uri_worker_map.c) in mod_jk.so for Apache Tomcat JK Web Server Connector 1.2.19 and 1.2.20, as used in Tomcat 4.1.34 and 5.5.20, allows remote attackers to execute arbitrary code via a long URL that triggers the overflow in a URI worker ma…
Affected: Tomcat Jk Web Server Connector (Apache) versions 1.2.19, 1.2.20; libapache-mod-jk (debian); mod_jk (redhat), among others. The full list is in the CVE brief.
It is not listed in any known-exploited vulnerabilities catalog.
No, it is not currently listed in the CISA Known Exploited Vulnerabilities catalog.
Public exploit code is available.
Fixed versions are available, including apache2-mod_jk 1.2.48-2.9, libapache-mod-jk 1:1.2.21-1, mod_jk 0:1.2.20-1.el4s1.2.
Brandefense priority: patch immediately, because it is very likely to be exploited soon.
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