National Vulnerability Database

National Vulnerability Database

National Vulnerability
Database

CVE-2006-4434 Detail

Current 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."

Source:  MITRE      Last Modified:  08/28/2006      View Analysis Description

Quick Info

CVE Dictionary Entry:
CVE-2006-4434
Original release date:
08/28/2006
Last revised:
03/10/2011
Source:
US-CERT/NIST

Impact

CVSS Severity (version 2.0):
CVSS v2 Base Score:
5.0 MEDIUM
Vector:
(AV:N/AC:L/Au:N/C:N/I:N/A:P) (legend)
Impact Subscore:
2.9
Exploitability Subscore:
10.0
CVSS Version 2 Metrics:
Access Vector:
Network exploitable
Access Complexity:
Low
Authentication:
Not required to exploit
Impact Type:
Allows disruption of service

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 Type Source Name
http://securitytracker.com/id?1016753 Patch External Source SECTRACK 1016753
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102664-1 External Source SUNALERT 102664
http://www.attrition.org/pipermail/vim/2006-August/000999.html External Source VIM 20060829 Sendmail vendor dispute - CVE-2006-4434 (fwd)
http://www.debian.org/security/2006/dsa-1164 External Source DEBIAN DSA-1164
http://www.mandriva.com/security/advisories?name=MDKSA-2006:156 External Source MANDRIVA MDKSA-2006:156
http://www.novell.com/linux/security/advisories/2006_21_sr.html External Source SUSE SUSE-SR:2006:021
http://www.openbsd.org/errata.html#sendmail3 External Source OPENBSD [3.9] 20060825 005: SECURITY FIX: August 25, 2006
http://www.openbsd.org/errata38.html#sendmail3 External Source OPENBSD [3.8] 20060825 010: SECURITY FIX: August 25, 2006
http://www.securityfocus.com/bid/19714 Patch External Source BID 19714
http://www.sendmail.org/releases/8.13.8.html Patch External Source CONFIRM http://www.sendmail.org/releases/8.13.8.html
http://www.vupen.com/english/advisories/2006/3393 Vendor Advisory External Source VUPEN ADV-2006-3393
http://www.vupen.com/english/advisories/2006/3994 Vendor Advisory External Source VUPEN ADV-2006-3994

Technical Details

Vulnerability Type (View All)

  • Resource Management Errors (CWE-399)

Vulnerable software and versions Switch to CPE 2.2

Configuration 1
OR
cpe:2.3:a:sendmail:sendmail:4.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:4.55:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5.59:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5.61:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:5.65:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.8.8:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.9.0:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.9.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.9.2:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.9.3:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.10:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.10.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.10.2:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.0:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.2:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.3:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.4:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.5:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.6:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.11.7:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12:beta10:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12:beta12:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12:beta16:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12:beta5:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12:beta7:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.0:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.1:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.2:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.3:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.4:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.5:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.6:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.7:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.8:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.9:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.10:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.12.11:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.13.3:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.13.4:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.13.5:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.13.6:*:*:*:*:*:*:*
cpe:2.3:a:sendmail:sendmail:8.13.7:*:*:*:*:*:*:*

Denotes Vulnerable Software
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Change History 2 change records found - show changes