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CVE-2009-1891

UnknownEPSS 17.11%

Last modified

CVE-2009-1891 is a vulnerability of currently unknown severity. The mod_deflate module in Apache httpd 2.2.11 and earlier compresses large files until completion even after the associated network connection is closed, which allows remote attackers to cause a denial of service (CPU consumption).. EPSS estimates a 17.11% chance of exploitation in the next 30 days.

Description

The mod_deflate module in Apache httpd 2.2.11 and earlier compresses large files until completion even after the associated network connection is closed, which allows remote attackers to cause a denial of service (CPU consumption).

Metrics

EPSS Probability
17.11%

96.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
ApacheHttp Server>= 2.0.35, < 2.0.64
ApacheHttp Server>= 2.2.0, < 2.2.12
DebianDebian Linux4.0
DebianDebian Linux5.0
DebianDebian Linux6.0
FedoraprojectFedora11
CanonicalUbuntu Linux6.06
CanonicalUbuntu Linux8.04
CanonicalUbuntu Linux8.10
CanonicalUbuntu Linux9.04
RedhatEnterprise Linux Desktop5.0
RedhatEnterprise Linux Eus5.3
RedhatEnterprise Linux Server5.0
RedhatEnterprise Linux Server Aus5.3
RedhatEnterprise Linux Workstation5.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2009-1891?
The mod_deflate module in Apache httpd 2.2.11 and earlier compresses large files until completion even after the associated network connection is closed, which allows remote attackers to cause a denial of service (CPU consumption).
How severe is CVE-2009-1891?
Severity scoring for CVE-2009-1891 is pending analysis. The EPSS model estimates a 17.11% probability of exploitation in the next 30 days.
How do I fix CVE-2009-1891?
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-2009-1891?

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

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Source: NVD / NIST