Overview
- Description
- A HTTP/2 implementation built using any version of the Python priority library prior to version 1.2.0 could be targeted by a malicious peer by having that peer assign priority information for every possible HTTP/2 stream ID. The priority tree would happily continue to store the priority information for each stream, and would therefore allocate unbounded amounts of memory. Attempting to actually use a tree like this would also cause extremely high CPU usage to maintain the tree.
- Source
- cve@mitre.org
- NVD status
- Analyzed
Risk scores
CVSS 3.0
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
CVSS 2.0
- Type
- Primary
- Base score
- 5
- Impact score
- 2.9
- Exploitability score
- 10
- Vector string
- AV:N/AC:L/Au:N/C:N/I:N/A:P
Weaknesses
- nvd@nist.gov
- CWE-399
Social media
- Hype score
- Not currently trending
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.0.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "1AD8F1D6-AFC5-4BAF-9E2E-58286ED8FA02"
},
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.1.0:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "C116405C-CC49-4664-AAD7-15E3549FA8BE"
},
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.1.1:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "6FB0D31F-B71D-4AD9-8D7B-1533018BF2B3"
}
],
"operator": "OR"
}
]
}
]