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CVE-2006-4434 Detail

Description

Use-after-free vulnerability in Sendmail before 8.13.8 allows remote attackers to cause a denial of service (crash) via a long "header line", which causes a previously freed variable to be referenced. NOTE: the original developer has disputed the severity of this issue, saying "The only denial of service that is possible here is to fill up the disk with core dumps if the OS actually generates different core dumps (which is unlikely)... the bug is in the shutdown code (finis()) which leads directly to exit(3), i.e., the process would terminate anyway, no mail delivery or receiption is affected."


Severity



CVSS 3.x Severity and Metrics:

NIST CVSS score
NIST: NVD
Base Score:  7.5 HIGH
Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H


NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

Vendor Statements (disclaimer)

Official Statement from Red Hat (08/30/2006)

This flaw causes a crash but does not result in a denial of service against Sendmail and is therefore not a security issue.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://securitytracker.com/id?1016753 Broken Link  Patch  Third Party Advisory  VDB Entry 
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102664-1 Broken Link 
http://www.attrition.org/pipermail/vim/2006-August/000999.html Mailing List 
http://www.debian.org/security/2006/dsa-1164 Broken Link 
http://www.mandriva.com/security/advisories?name=MDKSA-2006:156 Broken Link 
http://www.novell.com/linux/security/advisories/2006_21_sr.html Broken Link 
http://www.openbsd.org/errata.html#sendmail3 Release Notes 
http://www.openbsd.org/errata38.html#sendmail3 Third Party Advisory 
http://www.securityfocus.com/bid/19714 Broken Link  Patch  Third Party Advisory  VDB Entry 
http://www.sendmail.org/releases/8.13.8.html Release Notes 
http://www.vupen.com/english/advisories/2006/3393 Broken Link  Vendor Advisory 
http://www.vupen.com/english/advisories/2006/3994 Broken Link  Vendor Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-416 Use After Free cwe source acceptance level NIST  

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Change History

2 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2006-4434
NVD Published Date:
08/28/2006
NVD Last Modified:
02/15/2024
Source:
MITRE