Response Amplification Vulnerability in OpenLiteSpeed by LiteSpeed Technologies
CVE-2018-19791

6.5MEDIUM

Key Information:

Vendor

Litespeedtech

Status
Openlitespeed
Vendor
CVE Published:
3 December 2018

What is CVE-2018-19791?

The OpenLiteSpeed server prior to version 1.5.0 RC6 is susceptible to a response amplification vulnerability that arises from improper handling of byte sequence requests. An attacker can exploit this weakness by crafting HTTP requests with specific Range headers, such as 'bytes=0-,0-', which enables them to repeatedly request the full response body. This can lead to significant increases in response sizes, potentially overwhelming servers and affecting availability.

References

https://github.com/litespeedtech/openlitespeed/issues/117
x_refsource_MISC

CVSS V3.1

Score:
6.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.