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Vulnerability Details : CVE-2006-4434

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."
Publish Date : 2006-08-28 Last Update Date : 2011-03-10
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact None (There is no impact to the confidentiality of the system.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact Partial (There is reduced performance or interruptions in resource availability.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Denial Of Service
CWE ID 399

- Vendor Statements

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

- Related OVAL Definitions

Title Definition Id Class Family
CVE-2006-4434 oval:org.opensuse.security:def:20064434 unix
OVAL (Open Vulnerability and Assessment Language) definitions define exactly what should be done to verify a vulnerability or a missing patch. Check out the OVAL definitions if you want to learn what you should do to verify a vulnerability.

- Products Affected By CVE-2006-4434

# Product Type Vendor Product Version Update Edition Language
1 Application Sendmail Sendmail 4.1 Version Details Vulnerabilities
2 Application Sendmail Sendmail 4.55 Version Details Vulnerabilities
3 Application Sendmail Sendmail 5.59 Version Details Vulnerabilities
4 Application Sendmail Sendmail 5.61 Version Details Vulnerabilities
5 Application Sendmail Sendmail 5.65 Version Details Vulnerabilities
6 Application Sendmail Sendmail 8.8.8 Version Details Vulnerabilities
7 Application Sendmail Sendmail 8.9.0 Version Details Vulnerabilities
8 Application Sendmail Sendmail 8.9.1 Version Details Vulnerabilities
9 Application Sendmail Sendmail 8.9.2 Version Details Vulnerabilities
10 Application Sendmail Sendmail 8.9.3 Version Details Vulnerabilities
11 Application Sendmail Sendmail 8.10 Version Details Vulnerabilities
12 Application Sendmail Sendmail 8.10.1 Version Details Vulnerabilities
13 Application Sendmail Sendmail 8.10.2 Version Details Vulnerabilities
14 Application Sendmail Sendmail 8.11.0 Version Details Vulnerabilities
15 Application Sendmail Sendmail 8.11.1 Version Details Vulnerabilities
16 Application Sendmail Sendmail 8.11.2 Version Details Vulnerabilities
17 Application Sendmail Sendmail 8.11.3 Version Details Vulnerabilities
18 Application Sendmail Sendmail 8.11.4 Version Details Vulnerabilities
19 Application Sendmail Sendmail 8.11.5 Version Details Vulnerabilities
20 Application Sendmail Sendmail 8.11.6 Version Details Vulnerabilities
21 Application Sendmail Sendmail 8.11.7 Version Details Vulnerabilities
22 Application Sendmail Sendmail 8.12 Beta5 Version Details Vulnerabilities
23 Application Sendmail Sendmail 8.12 Beta7 Version Details Vulnerabilities
24 Application Sendmail Sendmail 8.12 Beta16 Version Details Vulnerabilities
25 Application Sendmail Sendmail 8.12 Beta12 Version Details Vulnerabilities
26 Application Sendmail Sendmail 8.12 Beta10 Version Details Vulnerabilities
27 Application Sendmail Sendmail 8.12.0 Version Details Vulnerabilities
28 Application Sendmail Sendmail 8.12.1 Version Details Vulnerabilities
29 Application Sendmail Sendmail 8.12.2 Version Details Vulnerabilities
30 Application Sendmail Sendmail 8.12.3 Version Details Vulnerabilities
31 Application Sendmail Sendmail 8.12.4 Version Details Vulnerabilities
32 Application Sendmail Sendmail 8.12.5 Version Details Vulnerabilities
33 Application Sendmail Sendmail 8.12.6 Version Details Vulnerabilities
34 Application Sendmail Sendmail 8.12.7 Version Details Vulnerabilities
35 Application Sendmail Sendmail 8.12.8 Version Details Vulnerabilities
36 Application Sendmail Sendmail 8.12.9 Version Details Vulnerabilities
37 Application Sendmail Sendmail 8.12.10 Version Details Vulnerabilities
38 Application Sendmail Sendmail 8.12.11 Version Details Vulnerabilities
39 Application Sendmail Sendmail 8.13.3 Version Details Vulnerabilities
40 Application Sendmail Sendmail 8.13.4 Version Details Vulnerabilities
41 Application Sendmail Sendmail 8.13.5 Version Details Vulnerabilities
42 Application Sendmail Sendmail 8.13.6 Version Details Vulnerabilities
43 Application Sendmail Sendmail 8.13.7 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Sendmail Sendmail 43

- References For CVE-2006-4434

http://secunia.com/advisories/21696
SECUNIA 21696
http://secunia.com/advisories/21749
SECUNIA 21749
http://secunia.com/advisories/21700
SECUNIA 21700
http://secunia.com/advisories/22369
SECUNIA 22369
http://sunsolve.sun.com/search/document.do?assetkey=1-26-102664-1
SUNALERT 102664
http://www.mandriva.com/security/advisories?name=MDKSA-2006:156
MANDRIVA MDKSA-2006:156
http://www.debian.org/security/2006/dsa-1164
DEBIAN DSA-1164
http://www.attrition.org/pipermail/vim/2006-August/000999.html
VIM 20060829 Sendmail vendor dispute - CVE-2006-4434 (fwd)
http://www.openbsd.org/errata.html#sendmail3
OPENBSD [3.9] 20060825 005: SECURITY FIX: August 25, 2006
http://www.novell.com/linux/security/advisories/2006_21_sr.html
SUSE SUSE-SR:2006:021
http://www.openbsd.org/errata38.html#sendmail3
OPENBSD [3.8] 20060825 010: SECURITY FIX: August 25, 2006
http://www.vupen.com/english/advisories/2006/3393
VUPEN ADV-2006-3393
http://www.osvdb.org/28193
OSVDB 28193
http://secunia.com/advisories/21641
SECUNIA 21641
http://secunia.com/advisories/21637
SECUNIA 21637
http://www.vupen.com/english/advisories/2006/3994
VUPEN ADV-2006-3994
http://securitytracker.com/id?1016753
SECTRACK 1016753
http://www.securityfocus.com/bid/19714
BID 19714 Sendmail Long Header Denial Of Service Vulnerability Release Date:2008-11-17
http://www.sendmail.org/releases/8.13.8.html CONFIRM

- Metasploit Modules Related To CVE-2006-4434

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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