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Vulnerability Details : CVE-2006-4336

Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbitrary code via a crafted leaf count table that causes a write to a negative index.
Publish Date : 2006-09-19 Last Update Date : 2018-10-17
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- CVSS Scores & Vulnerability Types

CVSS Score
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact Partial (Modification of some system files or information is possible, but the attacker does not have control over what can be modified, or the scope of what the attacker can affect is limited.)
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 User
Vulnerability Type(s) Execute Code
CWE ID CWE id is not defined for this vulnerability

- Vendor Statements

Red Hat Enterprise Linux 5 is not vulnerable to this issue as it contains a backported patch.
Source: Redhat

- Additional Vendor Supplied Data

Vendor Impact CVSS Score CVSS Vector Report Date Publish Date
Redhat moderate 2006-08-28 2006-09-19
If you are a vendor and you have additional data which can be automatically imported into our database, please contact admin @

- Related OVAL Definitions

Title Definition Id Class Family
Buffer underflow in the build_tree function in unpack.c in gzip 1.3.5 allows context-dependent attackers to execute arbi... oval:org.mitre.oval:def:10140 unix
CVE-2006-4336 unix
HP-UX Running Software Distributor (SD), Remote Denial of Service (DoS) oval:org.mitre.oval:def:19732 unix
RHSA-2006:0667: gzip security update (Moderate) oval:com.redhat.rhsa:def:20060667 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-2006-4336

# Product Type Vendor Product Version Update Edition Language
1 Application Gzip Gzip 1.3.5 Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Gzip Gzip 1

- References For CVE-2006-4336 CONFIRM
XF gzip-unpack-buffer-underflow(29042)
VUPEN ADV-2006-4750
VUPEN ADV-2006-4760
VUPEN ADV-2007-0092
VUPEN ADV-2007-0832
VUPEN ADV-2007-1171
VUPEN ADV-2006-4275
VUPEN ADV-2006-3695
BID 20101 GNU GZip Archive Handling Multiple Remote Vulnerabilities Release Date:2007-03-30
TRUSTIX 2006-0052
CERT TA06-333A
BUGTRAQ 20070330 VMSA-2007-0002 VMware ESX security updates
SUSE SUSE-SA:2006:056
OPENPKG OpenPKG-SA-2006.020
GENTOO GLSA-200611-24
BUGTRAQ 20060919 rPSA-2006-0170-1 gzip
CERT-VN VU#554780
SECTRACK 1016883
GENTOO GLSA-200609-13
SGI 20061001-01-P

- Metasploit Modules Related To CVE-2006-4336

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

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