---
cve: "CVE-2020-7070"
severity: "MEDIUM"
cvss: 4.3
epss: "5%"
vendor: "PHP Group"
kev: false
exploited: false
published: "2020-10-02 14:14:45"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-11T01:56:34+02:00"
---

# CVE-2020-7070

> 4.3 MEDIUM

## Beschreibung

In PHP versions 7.2.x below 7.2.34, 7.3.x below 7.3.23 and 7.4.x below 7.4.11, when PHP is processing incoming HTTP cookie values, the cookie names are url-decoded. This may lead to cookies with prefixes like __Host confused with cookies that decode to such prefix, thus leading to an attacker being able to forge cookie which is supposed to be secure. See also CVE-2020-8184 for more information.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 05eb475499359800a9c698f1759e442042c4f841 (Commit)
- 251b1fe177af320256c901e40c9e5fce18316d13 (Commit)

## Referenzen

- <https://hackerone.com/reports/895727>
- <https://bugs.php.net/bug.php?id=79699>
- <http://cve.circl.lu/cve/CVE-2020-8184>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RRU57N3OSYZPOMFWPRDNVH7EMYOTSZ66/>
- <https://lists.debian.org/debian-lts-announce/2020/10/msg00008.html>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7EVDN7D3IB4EAI4D3ZOM2OJKQ5SD7K4E/>
- <https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/P2J3ZZDHCSX65T5QWV4AHBN7MOJXBEKG/>
- <http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00045.html>
- <https://usn.ubuntu.com/4583-1/>
- <http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00067.html>
- <https://security.gentoo.org/glsa/202012-16>
- <https://www.debian.org/security/2021/dsa-4856>
- <https://security.netapp.com/advisory/ntap-20201016-0001/>
- <https://www.oracle.com/security-alerts/cpuoct2021.html>
- <https://www.tenable.com/security/tns-2021-14>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2020-7070) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_