PT-2018-15093 · Litespeed Technologies · Openlitespeed

Wireghoul · Published 2018-12-03 · Updated 2019-02-05 · CVE-2018-19791

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions OpenLiteSpeed versions prior to 1.5.0 RC6

Description The issue arises from the server's incorrect handling of requests for byte sequences. An attacker can exploit this by amplifying the response size through repeated requests for the entire response body, as seen with an HTTP Range header value starting with the "bytes=0-,0-" substring.

Recommendations For versions prior to 1.5.0 RC6, update to version 1.5.0 RC6 or later to resolve the issue.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

CVE-2018-19791

Affected Products

Openlitespeed

References · 4

• 🔥 https://github.com/litespeedtech/openlitespeed/issues/117 · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2018-19791 · Security Note
• https://osv.dev/vulnerability/CVE-2018-19791 · Vendor Advisory
• https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-19791 · Note