---
cve: "CVE-2021-25122"
severity: "LOW"
cvss: 3.1
epss: "18.1%"
vendor: "Apache Software Foundation"
kev: false
exploited: false
published: "2021-03-01 12:15:13"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-02T23:39:15+02:00"
---

# CVE-2021-25122

> 3.1 LOW

## Beschreibung

When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.

## CVSS-Vektor

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

| 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 | Hoch | bad |
| I Integrität | Keine | good |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E>
- <https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E>
- <https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E>
- <https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E>
- <https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E>
- <http://www.openwall.com/lists/oss-security/2021/03/01/1>
- <https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E>
- <https://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947%40%3Cusers.tomcat.apache.org%3E>
- <https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html>
- <https://www.debian.org/security/2021/dsa-4891>
- <https://www.oracle.com//security-alerts/cpujul2021.html>
- <https://security.netapp.com/advisory/ntap-20210409-0002/>
- <https://www.oracle.com/security-alerts/cpuoct2021.html>
- <https://www.oracle.com/security-alerts/cpujan2022.html>
- <https://security.gentoo.org/glsa/202208-34>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2021-25122) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_