CVE-2007-4980

GCALDaemon 1.0-beta13 - Denial of Service via Large Content-Length Header

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2007-4980. PoCs published by ikki.

AI-analyzed exploit summary This exploit sends a malformed HTTP request with an excessively large Content-Length header to trigger a denial-of-service (DoS) condition in GCALDaemon <= 1.0-beta13. The exploit establishes a TCP connection and sends the crafted request, causing the target service to crash or become unresponsive.

Description

The readRequest method in org/gcaldaemon/core/http/HTTPListener.java in GCALDaemon 1.0-beta13 allows remote attackers to cause a denial of service via a large integer value in the Content-Length HTTP header, which triggers a fatal Java OutOfMemoryError.

Exploits (1)

exploitdb WORKING POC VERIFIED
by ikki · perldosmultiple
https://www.exploit-db.com/exploits/4540

This exploit sends a malformed HTTP request with an excessively large Content-Length header to trigger a denial-of-service (DoS) condition in GCALDaemon <= 1.0-beta13. The exploit establishes a TCP connection and sends the crafted request, causing the target service to crash or become unresponsive.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: GCALDaemon <= 1.0-beta13
No auth needed
Prerequisites: Network access to the target service · Target service running on default or specified port (9090)
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (5)

Core 5
Core References
Third Party Advisory, VDB Entry vdb-entry x_refsource_osvdb
http://osvdb.org/40922
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/479816/100/0/threaded
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/3154
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/36670
Third Party Advisory, VDB Entry vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/25704

Scores

EPSS 0.0476
EPSS Percentile 90.7%

Details

CWE
CWE-189
Status published
Products (1)
gcaldaemon/gcaldaemon 1.0_beta13
Published Sep 19, 2007
Tracked Since Feb 18, 2026