http2: improper compressed header handling can lead to resource starvation

High

victorjulien published GHSA-9jxm-qw9v-266r

May 7, 2024

Package

suricata

Affected versions

>=7.0.0,<=7.0.4

>=6.0.0,<=6.0.18

Patched versions

7.0.5

6.0.19

Description

Impact

Small amount of HTTP/2 traffic can lead to Suricata using a large amount of memory.

Patches

The issue has been addressed in Suricata 7.0.5 and 6.0.19.

Workarounds

Disable the HTTP/2 parser.

Reduce app-layer.protocols.http2.max-table-size value (default is 65536)

References

https://redmine.openinfosecfoundation.org/issues/6892
https://redmine.openinfosecfoundation.org/issues/6900

Credits

OSS-fuzz using quadfuzz

Severity

High

7.5

/ 10

CVSS base metrics

Attack vector

Network

Attack complexity

Low

Privileges required

None

User interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H