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CVE-2009-0033

UnknownEPSS 10.05%

Last modified

CVE-2009-0033 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 10.05% chance of exploitation in the next 30 days.

Description

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.

Metrics

EPSS Probability
10.05%

95.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheTomcat4.1.0
ApacheTomcat4.1.1
ApacheTomcat4.1.2
ApacheTomcat4.1.3
ApacheTomcat4.1.4
ApacheTomcat4.1.5
ApacheTomcat4.1.6
ApacheTomcat4.1.7
ApacheTomcat4.1.8
ApacheTomcat4.1.9
ApacheTomcat4.1.10
ApacheTomcat4.1.11
ApacheTomcat4.1.12
ApacheTomcat4.1.13
ApacheTomcat4.1.14
ApacheTomcat4.1.15
ApacheTomcat4.1.16
ApacheTomcat4.1.17
ApacheTomcat4.1.18
ApacheTomcat4.1.19
ApacheTomcat4.1.20
ApacheTomcat4.1.21
ApacheTomcat4.1.22
ApacheTomcat4.1.23
ApacheTomcat4.1.24
ApacheTomcat4.1.25
ApacheTomcat4.1.26
ApacheTomcat4.1.27
ApacheTomcat4.1.28
ApacheTomcat4.1.29
ApacheTomcat4.1.30
ApacheTomcat4.1.31
ApacheTomcat4.1.32
ApacheTomcat4.1.33
ApacheTomcat4.1.34
ApacheTomcat4.1.35
ApacheTomcat4.1.36
ApacheTomcat4.1.37
ApacheTomcat4.1.38
ApacheTomcat4.1.39
ApacheTomcat5.5.0
ApacheTomcat5.5.1
ApacheTomcat5.5.2
ApacheTomcat5.5.3
ApacheTomcat5.5.4
ApacheTomcat5.5.5
ApacheTomcat5.5.6
ApacheTomcat5.5.7
ApacheTomcat5.5.8
ApacheTomcat5.5.9

Showing 50 of 85 affected configurations. See NVD for the full list.

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-0033?
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.
How severe is CVE-2009-0033?
Severity scoring for CVE-2009-0033 is pending analysis. The EPSS model estimates a 10.05% probability of exploitation in the next 30 days.
How do I fix CVE-2009-0033?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2009-0033?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST