---
cve: "CVE-2022-45061"
severity: "HIGH"
cvss: 7.5
epss: "2.5%"
vendor: "n/a"
kev: false
exploited: false
published: "2022-11-09 07:15:09"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-13T21:23:28+02:00"
---

# CVE-2022-45061

> 7.5 HIGH · 🧪 PoC

## Beschreibung

An issue was discovered in Python before 3.11.1. An unnecessary quadratic algorithm exists in one path when processing some inputs to the IDNA (RFC 3490) decoder, such that a crafted, unreasonably long name being presented to the decoder could lead to a CPU denial of service. Hostnames are often supplied by remote servers that could be controlled by a malicious actor; in such a scenario, they could trigger excessive CPU consumption on the client attempting to make use of an attacker-supplied supposed hostname. For example, the attack payload could be placed in the Location header of an HTTP response with status code 302. A fix is planned in 3.11.1, 3.10.9, 3.9.16, 3.8.16, and 3.7.16.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- a7a450f84a087421603170c2dad226bb881d4d9a (Commit)

## Referenzen

- <https://github.com/python/cpython/issues/98433>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O67LRHDTJWH544KXB6KY4HMHQLYDXFPK/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4WBZJNSALFGMPYTINIF57HAAK46U72WQ/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GTPVDZDATRQFE6KAT6B4BQIQ4GRHIIIJ/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RTN2OOLKYTG34DODUEJGT5MLC2PFGPBA/>
- <https://security.netapp.com/advisory/ntap-20221209-0007/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZB5YCMIRVX35RUB6XPOWKENCVCJEVDRK/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PLQ2BNZVBBAQPV3SPRU24ZD37UYJJS7W/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VCMDX6IFKLOA3NXUQEV524L5LHTPI2JI/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/63FS6VHY4DCS74HBTEINUDOECQ2X6ZCH/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ORVCQGJCCAVLN4DJDTWGREFCUWXKQRML/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T3D5TX4TDJPXHXD2QICKTY3OCQC3JARP/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JCDJXNBHWXNYUTOEV4H2HCFSRKV3SYL3/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RH57BNT4VQERGEJ5SXNXSVMDYP66YD4H/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LKWAMPURWUV3DCCT4J7VHRF4NT2CFVBR/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2022-45061) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_