cve/2017/CVE-2017-15710.md

### [CVE-2017-15710](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15710)
![](https://img.shields.io/static/v1?label=Product&message=Apache%20HTTP%20Server&color=blue)
![](https://img.shields.io/static/v1?label=Version&message=n%2Fa&color=blue)
![](https://img.shields.io/static/v1?label=Vulnerability&message=Out%20of%20bound%20write%20in%20mod_authnz_ldap%20when%20using%20too%20small%20Accept-Language%20values.&color=brighgreen)

### Description

In Apache httpd 2.0.23 to 2.0.65, 2.2.0 to 2.2.34, and 2.4.0 to 2.4.29, mod_authnz_ldap, if configured with AuthLDAPCharsetConfig, uses the Accept-Language header value to lookup the right charset encoding when verifying the user's credentials. If the header value is not present in the charset conversion table, a fallback mechanism is used to truncate it to a two characters value to allow a quick retry (for example, 'en-US' is truncated to 'en'). A header value of less than two characters forces an out of bound write of one NUL byte to a memory location that is not part of the string. In the worst case, quite unlikely, the process would crash which could be used as a Denial of Service attack. In the more likely case, this memory is already reserved for future use and the issue has no effect at all.

### POC

#### Reference
No PoCs from references.

#### Github
- https://github.com/ARPSyndicate/cvemon
- https://github.com/AlanShami/Red-Team-vs-Blue-Team-Project
- https://github.com/Chad-Atkinson/Red-vs-Blue-team-project
- https://github.com/ChadSWilliamson/Red-vs.-Blue-Project
- https://github.com/FRobertAllen/Red-Team-Vs-Blue-Team
- https://github.com/PawanKumarPandit/Shodan-nrich
- https://github.com/RoseSecurity-Research/Red-Teaming-TTPs
- https://github.com/RoseSecurity/Red-Teaming-TTPs
- https://github.com/SamGeron/Red-Team-vs-Blue-Team
- https://github.com/ShattenJager81/Cyber-2
- https://github.com/Xorlent/Red-Teaming-TTPs
- https://github.com/austin-lai/External-Penetration-Testing-Holo-Corporate-Network-TryHackMe-Holo-Network
- https://github.com/bioly230/THM_Skynet
- https://github.com/fdool73/insightvm_slackbot
- https://github.com/firatesatoglu/shodanSearch
- https://github.com/rackerlabs/insightvm_slackbot
- https://github.com/retr0-13/nrich
- https://github.com/rnbochsr/yr_of_the_jellyfish
- https://github.com/rochoabanuelos/Red-Team-vs-Blue-Team-Analysis
- https://github.com/shamsulchowdhury/Unit-20-Project-2-Red-vs-Blue-Team
- https://github.com/vshaliii/Basic-Pentesting-2-Vulnhub-Walkthrough
- https://github.com/vshaliii/DC-2-Vulnhub-Walkthrough
- https://github.com/vshaliii/DC-3-Vulnhub-Walkthrough
- https://github.com/vshaliii/Funbox2-rookie