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bdu:2024-04194

BREW-airshare-CVE-2024-30251 — aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

Affected: Homebrew: airshare

### Summary An attacker can send a specially crafted POST (multipart/form-data) request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests.

### Impact An attacker can stop the application from serving requests after sending a single request.

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For anyone needing to patch older versions of aiohttp, the minimum diff needed to resolve the issue is (located in `_read_chunk_from_length()`):

```diff diff --git a/aiohttp/multipart.py b/aiohttp/multipart.py index 227be605c..71fc2654a 100644 --- a/aiohttp/multipart.py +++ b/aiohttp/multipart.py @@ -338,6 +338,8 @@ class BodyPartReader: assert self._length is not None, "Content-Length required for chunked read" chunk_size = min(size, self._length - self._read_bytes) chunk = await self._content.read(chunk_size) + if self._content.at_eof(): + self._at_eof = True return chunk async def _read_chunk_from_stream(self, size: int) -> bytes: ```

This does however introduce some very minor issues with handling form data. So, if possible, it would be recommended to also backport the changes in: https://github.com/aio-libs/aiohttp/commit/cebe526b9c34dc3a3da9140409db63014bc4cf19 https://github.com/aio-libs/aiohttp/commit/7eecdff163ccf029fbb1ddc9de4169d4aaeb6597 https://github.com/aio-libs/aiohttp/commit/f21c6f2ca512a026ce7f0f6c6311f62d6a638866

certfr-2024-avi-0514 — De multiples vulnérabilités ont été découvertes dans les produits IBM. Certaines d'entre elles permettent à un attaquan…

certfr-2024-avi-0514

EUVD-2026-258113

fkie_cve-2024-30251

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. In affected versions an attacker can send a specially crafted POST (multipart/form-data) request. When the aiohttp server processes it, the server will enter an infinite loop and be unable to process any further requests. An attacker can stop the application from serving requests after sending a single request. This issue has been addressed in version 3.9.4. Users are advised to upgrade. Users unable to upgrade may manually apply a patch to their systems. Please see the linked GHSA for instructions.

GHSA-5m98-qgg9-wh84 — aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

Affected: PyPI: aiohttp

### Impact An attacker can stop the application from serving requests after sending a single request.

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For anyone needing to patch older versions of aiohttp, the minimum diff needed to resolve the issue is (located in `_read_chunk_from_length()`):

gsd-2024-30251

msrc_CVE-2024-30251 — Denial of service when trying to parse malformed POST requests in aiohttp

msrc_CVE-2024-30251

OESA-2025-1250 — python-aiohttp security update

Affected: openEuler:20.03-LTS-SP4: python-aiohttp

Async http client/server framework (asyncio). Security Fix(es):

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.(CVE-2023-47627)

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. 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. If the attacker can control the HTTP version of the request it will be able to modify the request (request smuggling). This issue has been patched in version 3.9.0.(CVE-2023-49082)

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. When using aiohttp as a web server and configuring static routes, it is necessary to specify the root path for static files. Additionally, the option 'follow_symlinks' can be used to determine whether to follow symbolic links outside the static root directory. When 'follow_symlinks' is set to…

PYSEC-2026-1098 — aiohttp vulnerable to Denial of Service when trying to parse malformed POST requests

Affected: PyPI: aiohttp

### Impact An attacker can stop the application from serving requests after sending a single request.

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For anyone needing to patch older versions of aiohttp, the minimum diff needed to resolve the issue is (located in `_read_chunk_from_length()`):

RHSA-2024:3781 — Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update

pip: Mercurial configuration injectable in repo revision when installing via pip golang: net/http, x/net/http2: unlimited number of CONTINUATION frames causes DoS golang: net/http: golang: mime/multipart: golang: net/textproto: memory exhaustion in Request.ParseMultipartForm python-cryptography: NULL-dereference when loading PKCS7 certificates pillow: Arbitrary Code Execution via the environment parameter python-gunicorn: HTTP Request Smuggling due to improper validation of Transfer-Encoding headers python-idna: potential DoS via resource consumption via specially crafted inputs to idna.encode() python-pydantic: regular expression denial of service via crafted email string sqlparse: parsing heavily nested list leads to denial of service psf/black: ReDoS via the lines_with_leading_tabs_expanded() function in strings.py file golang: crypto/x509: Verify panics on certificates with an unknown public key algorithm python-cryptography: NULL pointer dereference with pkcs12.serialize_key_and_certificates when called with a non-matching certificate and private key and an hmac_hash override aiohttp: XSS on index pages for static file handling python-django: Potential regular expression denial-of-service in django.utils.text.Truncator.words() python-pillow: buffer overflow in _imagingcms.c follow-redirects: Possible credential leak aiohttp: DoS when trying to parse malformed POST requests python-social-auth: Improper Handling of Case Sensitivity in social-auth-app-django jinja2: accept…

UBUNTU-CVE-2024-30251

Affected: Ubuntu:Pro:22.04:LTS: python-aiohttp, Ubuntu:Pro:24.04:LTS: python-aiohttp

WID-SEC-W-2024-1328 — Red Hat Ansible Automation Platform: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Red Hat Ansible Automation Platform ausnutzen, um beliebigen Programmcode auszuführen, einen Denial-of-Service-Zustand erzeugen, vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen, Dateien zu manipulieren oder Cross-Site-Scripting (XSS)-Angriffe durchzuführen.