5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
4.9 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.8%
Improper validation makes it possible for an attacker to modify the HTTP request (e.g. insert a new header) or even create a new HTTP request if the attacker controls the HTTP method.
The vulnerability occurs only if the attacker can control the HTTP method (GET, POST etc.) of the request.
Previous releases performed no validation on the provided value. If an attacker controls the HTTP method it will be used as is and can lead to HTTP request smuggling.
A minimal example can be found here:
https://gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b
If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling).
If unable to upgrade and using user-provided values for the request method, perform manual validation of the user value (e.g. by restricting it to a few known values like GET, POST etc.).
gist.github.com/jnovikov/7f411ae9fe6a9a7804cf162a3bdbb44b
github.com/aio-libs/aiohttp
github.com/aio-libs/aiohttp/commit/e4ae01c2077d2cfa116aa82e4ff6866857f7c466
github.com/aio-libs/aiohttp/pull/7806/files
github.com/aio-libs/aiohttp/security/advisories/GHSA-qvrw-v9rv-5rjx
github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2023-251.yaml
lists.fedoraproject.org/archives/list/[email protected]/message/TY5SI6NK5243DEEDQUFKQKW5GQNKQUMA
lists.fedoraproject.org/archives/list/[email protected]/message/WSYWMP64ZFCTC3VO6RY6EC6VSSMV6I3A
nvd.nist.gov/vuln/detail/CVE-2023-49082
5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
4.9 Medium
AI Score
Confidence
High
0.001 Low
EPSS
Percentile
19.8%