CVE-2009-0033
MEDIUM · CVSS 5.0EPSS 10.1%EU EUVD
Apache Tomcat 4.1.0 through 4.1.39, 5.5.0 through 5.5.27, and 6.0.0 through 6.0.18, when the Java AJP connector and mod_jk load balancing are used, allows remote attackers to cause a denial of service (application outage) via a crafted request with invalid headers, related to temporary blocking of connectors that have encountered errors, as demonstrated by an error involving a malformed HTTP Host header.
Key facts
- CVSS score
- 5.0 (v2.0)
- Severity
- MEDIUM
- CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P- Weakness (CWE)
- CWE-20
- EPSS score
- 10.1% (96th percentile)
- In CISA KEV
- No
- In EU EUVD
- Yes (EUVD-2022-2567)
- Published
- June 5, 2009
- NVD last modified
- June 16, 2026
- Status
- Modified
EU Vulnerability Database (EUVD)
This vulnerability is also tracked by ENISA as EUVD-2022-2567 in the EU Vulnerability Database. Last updated in EUVD on August 7, 2024.
View on the EU Vulnerability DatabaseAffected products
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
- apache / tomcat
and 37 more…
References
- http://jvn.jp/en/jp/JVN87272440/index.html
- http://lists.apple.com/archives/security-announce/2010//Mar/msg00001.html
- http://lists.opensuse.org/opensuse-security-announce/2009-07/msg00002.html
- http://marc.info/?l=bugtraq&m=127420533226623&w=2
- http://marc.info/?l=bugtraq&m=129070310906557&w=2
- http://marc.info/?l=bugtraq&m=133469267822771&w=2
- http://marc.info/?l=bugtraq&m=136485229118404&w=2
- http://secunia.com/advisories/35326(Vendor Advisory)
- http://secunia.com/advisories/35344(Vendor Advisory)
- http://secunia.com/advisories/35685
- http://secunia.com/advisories/35788
- http://secunia.com/advisories/37460
- http://secunia.com/advisories/42368
- http://securitytracker.com/id?1022331
- http://sunsolve.sun.com/search/document.do?assetkey=1-26-263529-1
- http://support.apple.com/kb/HT4077
- http://svn.apache.org/viewvc?rev=742915&view=rev(Patch, Vendor Advisory)
- http://svn.apache.org/viewvc?rev=781362&view=rev(Patch, Vendor Advisory)
- http://tomcat.apache.org/security-4.html(Patch, Vendor Advisory)
- http://tomcat.apache.org/security-5.html(Patch, Vendor Advisory)
- http://tomcat.apache.org/security-6.html(Patch, Vendor Advisory)
- http://www.debian.org/security/2011/dsa-2207
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:136
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:138
- http://www.mandriva.com/security/advisories?name=MDVSA-2010:176
- http://www.securityfocus.com/archive/1/504044/100/0/threaded
- http://www.securityfocus.com/archive/1/507985/100/0/threaded
- http://www.securityfocus.com/bid/35193(Patch)
- http://www.vmware.com/security/advisories/VMSA-2009-0016.html
- http://www.vupen.com/english/advisories/2009/1496(Patch, Vendor Advisory)
- http://www.vupen.com/english/advisories/2009/1856
- http://www.vupen.com/english/advisories/2009/3316
- http://www.vupen.com/english/advisories/2010/3056
- https://exchange.xforce.ibmcloud.com/vulnerabilities/50928
- https://lists.apache.org/thread.html/06cfb634bc7bf37af7d8f760f118018746ad8efbd519c4b789ac9c2e%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/29dc6c2b625789e70a9c4756b5a327e6547273ff8bde7e0327af48c5%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/8dcaf7c3894d66cb717646ea1504ea6e300021c85bb4e677dc16b1aa%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/c62b0e3a7bf23342352a5810c640a94b6db69957c5c19db507004d74%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r3aacc40356defc3f248aa504b1e48e819dd0471a0a83349080c6bcbf%40%3Cdev.tomcat.apache.org%3E
- https://lists.apache.org/thread.html/r584a714f141eff7b1c358d4679288177bd4ca4558e9999d15867d4b5%40%3Cdev.tomcat.apache.org%3E
Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS
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