Rule Category

SERVER-WEBAPP -- Snort has detected traffic exploiting vulnerabilities in web based applications on servers.

Alert Message

SERVER-WEBAPP HTTP request with negative Content-Length attempt

Rule Explanation

Rule checks for an attempt to trigger an integer overflow via the Content-Length header. Impact: Details: Rule checks for an attempt to trigger an integer overflow via a malicious Content-Length header value. Ease of Attack:

What To Look For

This rule will alert when an attempt to exploit a known memory corruption bug in Apache subversion is detected.

Known Usage

No public information

False Positives

No known false positives

Contributors

Talos research team. This document was generated from data supplied by the national vulnerability database, a product of the national institute of standards and technology. For more information see [nvd].

MITRE ATT&CK Framework

Tactic: Execution

Technique: User Execution

For reference, see the MITRE ATT&CK vulnerability types here: https://attack.mitre.org

CVE

Rule Vulnerability

Buffer Overflow

Buffer Overflows occur when a memory location is filled past its expected boundaries. Computer attackers target systems without proper terminating conditions on buffers, which then write the additional information in other locations in memory, overwriting what is there. This could corrupt the data, making the system behave erratically or crash. The new information could include malicious executable code, which might be executed.

CVE Additional Information

CVE-2004-0095
McAfee ePolicy Orchestrator agent allows remote attackers to cause a denial of service (memory consumption and crash) and possibly execute arbitrary code via an HTTP POST request with an invalid Content-Length value, possibly triggering a buffer overflow.
Details
SeverityMEDIUM Base Score5.0
Impact Score2.9 Exploit Score10.0
Confidentiality ImpactNONE Integrity ImpactNONE
Availability ImpactPARTIAL Access Vector
AuthenticationNONE Ease of Access
CVE-2006-2162
Buffer overflow in CGI scripts in Nagios 1.x before 1.4 and 2.x before 2.3 allows remote attackers to execute arbitrary code via a negative content length (Content-Length) HTTP header.
Details
SeverityMEDIUM Base Score5.0
Impact Score2.9 Exploit Score10.0
Confidentiality ImpactNONE Integrity ImpactPARTIAL
Availability ImpactNONE Access Vector
AuthenticationNONE Ease of Access
CVE-2006-3655
Unspecified vulnerability in mso.dll in Microsoft PowerPoint 2003 allows user-assisted attackers to execute arbitrary code via a crafted PowerPoint file. NOTE: due to the lack of available details as of 20060717, it is unclear how this is related to CVE-2006-3656, CVE-2006-3660, and CVE-2006-3590, although it is possible that they are all different.
Details
SeverityMEDIUM Base Score5.1
Impact Score6.4 Exploit Score4.9
Confidentiality ImpactPARTIAL Integrity ImpactPARTIAL
Availability ImpactPARTIAL Access Vector
AuthenticationNONE Ease of Access
CVE-2014-9192
Integer overflow in Trihedral Engineering VTScada (formerly VTS) 6.5 through 9.x before 9.1.20, 10.x before 10.2.22, and 11.x before 11.1.07 allows remote attackers to cause a denial of service (server crash) via a crafted request, which triggers a large memory allocation.
Details
SeverityMEDIUM Base Score5.0
Impact Score2.9 Exploit Score10.0
Confidentiality ImpactNONE Integrity ImpactNONE
Availability ImpactPARTIAL Access Vector
AuthenticationNONE Ease of Access
CVE-2017-1000470
EmbedThis GoAhead Webserver versions 4.0.0 and earlier is vulnerable to an integer overflow in the HTTP listener resulting in denial of service.
Details
Severity Base Score7.5
Impact Score3.6 Exploit Score3.9
Confidentiality ImpactNONE Integrity ImpactNONE
Availability ImpactHIGH Access Vector
Authentication Ease of Access
CVE-2005-3653
Heap-based buffer overflow in the iGateway service for various Computer Associates (CA) iTechnology products, in iTechnology iGateway before 4.0.051230, allows remote attackers to execute arbitrary code via an HTTP request with a negative Content-Length field.
Details
SeverityHIGH Base Score10.0
Impact Score10.0 Exploit Score10.0
Confidentiality ImpactCOMPLETE Integrity ImpactCOMPLETE
Availability ImpactCOMPLETE Access Vector
AuthenticationNONE Ease of Access
CVE-2015-5343
Integer overflow in util.c in mod_dav_svn in Apache Subversion 1.7.x, 1.8.x before 1.8.15, and 1.9.x before 1.9.3 allows remote authenticated users to cause a denial of service (subversion server crash or memory consumption) and possibly execute arbitrary code via a skel-encoded request body, which triggers an out-of-bounds read and heap-based buffer overflow.
Details
Severity Base Score7.6
Impact Score4.7 Exploit Score2.8
Confidentiality ImpactLOW Integrity ImpactLOW
Availability ImpactHIGH Access Vector
Authentication Ease of Access