CVE-1999-0107

Apache HTTP Server - Denial of Service via Excessive Slash Characters in GET Requests

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 2 public exploits for CVE-1999-0107. PoCs published by Michal Zalewski, HORKimhab.

AI-analyzed exploit summary The provided text describes a denial of service vulnerability in Apache Web Server 1.2 and earlier versions. The attack involves sending a malformed GET request with an excessive number of '/' characters, causing high CPU usage and requiring a service restart.

Description

Buffer overflow in Apache 1.2.5 and earlier allows a remote attacker to cause a denial of service with a large number of GET requests containing a large number of / characters.

Exploits (2)

exploitdb WRITEUP VERIFIED
by Michal Zalewski · textdosmultiple
https://www.exploit-db.com/exploits/20558

The provided text describes a denial of service vulnerability in Apache Web Server 1.2 and earlier versions. The attack involves sending a malformed GET request with an excessive number of '/' characters, causing high CPU usage and requiring a service restart.

Classification
Writeup 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: Apache Web Server 1.2 and previous versions
No auth needed
Prerequisites: Network access to the target Apache server
mistral-large-3 · analyzed Feb 16, 2026 Full analysis →
github STUB
by HORKimhab · shellpoc
https://github.com/HORKimhab/poc-cve-collection/tree/main/1999/0xxx/CVE-1999-0107.md

The repository contains only a markdown file with a basic description of CVE-1999-0107, a buffer overflow in Apache 1.2.5 and earlier leading to denial of service. No functional exploit code, technical analysis, or proof-of-concept is provided.

Classification
Stub 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Theoretical
Target: Apache 1.2.5 and earlier
No auth needed
Prerequisites: Network access to the Apache server
mistral-large-3 · analyzed Jul 15, 2026 Full analysis →

References (1)

Core 1
Core References
Third Party Advisory, VDB Entry x_refsource_misc
https://exchange.xforce.ibmcloud.com/vulnerabilities/CVE-1999-0107

Scores

EPSS 0.1994
EPSS Percentile 97.2%

Details

Status published
Products (9)
apache/http_server 0.8.11
apache/http_server 0.8.14
apache/http_server 1.0
apache/http_server 1.0.2
apache/http_server 1.0.3
apache/http_server 1.0.5
apache/http_server 1.1
apache/http_server 1.1.1
apache/http_server 1.2.5
Published Dec 30, 1997
Tracked Since Feb 18, 2026