CVE-2006-6679

Pedro Lineu Orso chetcpasswd before 2.4 relies on the X-Forwarded-For HTTP header when verifying a client's status on an IP address ACL, which allows remote attackers to gain unauthorized access by spoofing this header.

Published: 2006-12-21 Last update: 2026-04-23 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2006-6679 is rated Moderate Risk (58.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 2.07%). Review affected assets and schedule remediation.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Exploit prediction scoring system (EPSS) score for CVE-2006-6679

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-06-15 1.61% 2.07% +0.46%
2 2025-08-09 1.24% 1.61% +0.37%
3 2025-03-30 — 1.24% —

Full EPSS history (12 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2006-6679

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
7.5 3.1 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:H)
Serious risk that confidential data gets exposed in a big way.
Integrity (I:N)
Data isn’t meaningfully altered or forged.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 3.6 [email protected]
7.5 2.0 HIGH
AV:N/AC:L/Au:N/C:P/I:P/A:P Click to expand
Access vector (AV:N)
Can be exploited remotely over network reachability.
Access complexity (AC:L)
Exploitation conditions are straightforward and predictable.
Authentication (AU:N)
No authentication is required.
Confidentiality impact (C:P)
Partial confidentiality impact.
Integrity impact (I:P)
Partial integrity impact.
Availability impact (A:P)
Partial availability impact.
 10.0 6.4 [email protected]

Weakness enumeration for CVE-2006-6679

OS Trackers for CVE-2006-6679

vendor priority summary link
alpine — CVE-2006-6679: no source package rows; 0 state rows across 0 repos (none); fixed 0, open 0. https://security.alpinelinux.org/vuln/CVE-2006-6679

Affected software / configurations for CVE-2006-6679

Vendor Product Version Raw CPE
chetcpasswd_project chetcpasswd < 2.4 cpe:2.3:a:chetcpasswd_project:chetcpasswd:*:*:*:*:*:*:*:*

References for CVE-2006-6679

URL Tags
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=394454 Mailing List Third Party Advisory
http://marc.info/?l=bugtraq&m=116371297325564&w=2 Mailing List Third Party Advisory
http://secunia.com/advisories/22967 Broken Link Permissions Required Third Party Advisory
http://sourceforge.net/project/shownotes.php?group_id=68912&release_id=466649 Product
http://www.osvdb.org/30544 Broken Link
http://www.securityfocus.com/bid/21102 Broken Link Third Party Advisory VDB Entry
https://exchange.xforce.ibmcloud.com/vulnerabilities/30451 Third Party Advisory VDB Entry
cvelogic Threat Intelligence