- 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
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
- nvd@nist.gov
- CWE-399
- Hype score
- Not currently trending
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{
"nodes": [
{
"negate": false,
"cpeMatch": [
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"vulnerable": true,
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},
{
"criteria": "cpe:2.3:a:python:python_priority_library:1.1.0:*:*:*:*:*:*:*",
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},
{
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"operator": "OR"
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]