Strix
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CVE-2018-19791

UnknownEPSS 1.24%

Last modified

CVE-2018-19791 is a vulnerability of currently unknown severity. The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 does not correctly handle requests for byte sequences, allowing an attacker to amplify the response size by requesting the entire response body repeatedly, as demonstrated by an HTTP Range header value beginning with the "bytes=0-,0-" substring.. EPSS estimates a 1.24% chance of exploitation in the next 30 days.

Description

The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 does not correctly handle requests for byte sequences, allowing an attacker to amplify the response size by requesting the entire response body repeatedly, as demonstrated by an HTTP Range header value beginning with the "bytes=0-,0-" substring.

Metrics

EPSS Probability
1.24%

65.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LitespeedtechOpenlitespeed< 1.5.0
LitespeedtechOpenlitespeed1.5.0

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-19791?
The server in LiteSpeed OpenLiteSpeed before 1.5.0 RC6 does not correctly handle requests for byte sequences, allowing an attacker to amplify the response size by requesting the entire response body repeatedly, as demonstrated by an HTTP Range header value beginning with the "bytes=0-,0-" substring.
How severe is CVE-2018-19791?
Severity scoring for CVE-2018-19791 is pending analysis. The EPSS model estimates a 1.24% probability of exploitation in the next 30 days.
How do I fix CVE-2018-19791?
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-2018-19791?

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

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Source: NVD / NIST