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.

CVSS v3.0

6.5 MEDIUMCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS v2.0

4.0 MEDIUMAV:N/AC:L/Au:S/C:N/I:N/A:P

EPSS

1.24% chance of exploitation in the next 30 days, 67th percentile

Published

2018-12-03

Updated

2024-08-05

Proof-of-concept exploits (1)

• litespeedtech/openlitespeed/issues/117

References

• CVE Record
• NVD entry

Related

• CVE-2018-19792
• CVE-2021-26758
• CVE-2018-19788
• CVE-2018-19783
• CVE-2018-19794
• CVE-2018-19782