CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
83.9%
Open redirect vulnerability — a maliciously crafted link to an aiohttp-based web-server could redirect the browser to a different website.
It is caused by a bug in the aiohttp.web_middlewares.normalize_path_middleware
middleware.
This security problem has been fixed in v3.7.4. Upgrade your dependency as follows:
pip install aiohttp >= 3.7.4
If upgrading is not an option for you, a workaround can be to avoid using aiohttp.web_middlewares.normalize_path_middleware
in your applications.
If you have any questions or comments about this advisory:
Credit: Jelmer Vernooij and Beast Glatisant.
github.com/advisories/GHSA-v6wp-4m6f-gcjg
github.com/aio-libs/aiohttp/blob/master/CHANGES.rst#374-2021-02-25
github.com/aio-libs/aiohttp/commit/2545222a3853e31ace15d87ae0e2effb7da0c96b
github.com/aio-libs/aiohttp/security/advisories/GHSA-v6wp-4m6f-gcjg
github.com/pypa/advisory-database/tree/main/vulns/aiohttp/PYSEC-2021-76.yaml
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FU7ENI54JNEK3PHEFGCE46DGMFNTVU6L
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JN3V7CZJRT4QFCVXB6LDPCJH7NAOFCA5
lists.fedoraproject.org/archives/list/[email protected]/message/FU7ENI54JNEK3PHEFGCE46DGMFNTVU6L
lists.fedoraproject.org/archives/list/[email protected]/message/JN3V7CZJRT4QFCVXB6LDPCJH7NAOFCA5
nvd.nist.gov/vuln/detail/CVE-2021-21330
pypi.org/project/aiohttp
security.gentoo.org/glsa/202208-19
www.debian.org/security/2021/dsa-4864
CVSS2
Attack Vector
NETWORK
Attack Complexity
MEDIUM
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
PARTIAL
Availability Impact
NONE
AV:N/AC:M/Au:N/C:P/I:P/A:N
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
AI Score
Confidence
High
EPSS
Percentile
83.9%