4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
40.7%
Discourse is an open source discussion platform. In versions prior to 2.8.1 in the stable
branch, 2.9.0.beta2 in the beta
branch, and 2.9.0.beta2 in the tests-passed
branch, users can trigger a Denial of Service attack by posting a streaming URL. Parsing Oneboxes in the background job trigger an infinite loop, which cause memory leaks. This issue is patched in version 2.8.1 of the stable
branch, 2.9.0.beta2 of the beta
branch, and 2.9.0.beta2 of the tests-passed
branch. As a workaround, disable onebox in admin panel completely or specify allow list of domains that will be oneboxed.
[
{
"product": "discourse",
"vendor": "discourse",
"versions": [
{
"status": "affected",
"version": "stable <= 2.8.0"
},
{
"status": "affected",
"version": "beta <= 2.9.0.beta1"
},
{
"status": "affected",
"version": "tests-passed <= 2.9.0.beta1"
}
]
}
]
4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
SINGLE
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:S/C:N/I:N/A:P
6.5 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
0.001 Low
EPSS
Percentile
40.7%