cve/2021/CVE-2021-26691.md

### [CVE-2021-26691](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-26691)
![](https://img.shields.io/static/v1?label=Product&message=Apache%20HTTP%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=2.4%3D%202.4.46%20&color=brighgreen)
![](https://img.shields.io/static/v1?label=Vulnerability&message=CWE-122%20Heap-based%20Buffer%20Overflow&color=brighgreen)

### Description

In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow

### POC

#### Reference
- https://www.oracle.com/security-alerts/cpujan2022.html
- https://www.oracle.com/security-alerts/cpuoct2021.html

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/PierreChrd/py-projet-tut
- https://github.com/Totes5706/TotesHTB
- https://github.com/austin-lai/External-Penetration-Testing-Holo-Corporate-Network-TryHackMe-Holo-Network
- https://github.com/bioly230/THM_Skynet
- https://github.com/firatesatoglu/shodanSearch
- https://github.com/fkm75P8YjLkb/CVE-2021-26691
- https://github.com/hound672/BlackBox-CI-CD-script
- https://github.com/jkiala2/Projet_etude_M1
- https://github.com/rmtec/modeswitcher