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Vulnerability · Published Nov 14, 2023 · Assigned by GitHub_M

CVE-2023-47627Request smuggling in aiohttp

Medium 5.3

In plain English

A medium-severity security flaw in aiohttp from aio-libs. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 59% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.9%top 41.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known

Official description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. The HTTP parser in AIOHTTP has numerous problems with header parsing, which could lead to request smuggling. This parser is only used when AIOHTTP_NO_EXTENSIONS is enabled (or not using a prebuilt wheel). These bugs have been addressed in commit `d5c12ba89` which has been included in release version 3.8.6. Users are advised to upgrade. There are no known workarounds for these issues.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12python-aiohttp3.8.4-1+deb12u1DEBIAN-CVE-2023-47627
Debian:12python-aiohttp3.8.4-1+deb12u1DSA-5828-1
Debian:13python-aiohttp3.8.6-1DEBIAN-CVE-2023-47627
Debian:14python-aiohttp3.8.6-1DEBIAN-CVE-2023-47627
PyPIaiohttp3.8.6GHSA-gfw2-4jvh-wgfg
PyPIaiohttp3.8.6PYSEC-2023-246

Affected products (as reported)

VendorProductVersions
aio-libs aiohttp < 3.8.6

Weakness: CWE-444 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

References