Executive Summary
| Summary | |
|---|---|
| Title | New squid packages fix ACL bypass |
| Informations | |||
|---|---|---|---|
| Name | DSA-474 | First vendor Publication | 2004-04-03 |
| Vendor | Debian | Last vendor Modification | 2004-04-03 |
| Severity (Vendor) | N/A | Revision | 1 |
Security-Database Scoring CVSS v3
| Cvss vector : N/A | |||
|---|---|---|---|
| Overall CVSS Score | NA | ||
| Base Score | NA | Environmental Score | NA |
| impact SubScore | NA | Temporal Score | NA |
| Exploitabality Sub Score | NA | ||
| Calculate full CVSS 3.0 Vectors scores | |||
Security-Database Scoring CVSS v2
| Cvss vector : (AV:N/AC:L/Au:N/C:P/I:P/A:P) | |||
|---|---|---|---|
| Cvss Base Score | 7.5 | Attack Range | Network |
| Cvss Impact Score | 6.4 | Attack Complexity | Low |
| Cvss Expoit Score | 10 | Authentication | None Required |
| Calculate full CVSS 2.0 Vectors scores | |||
Detail
| A vulnerability was discovered in squid, an Internet object cache, whereby access control lists based on URLs could be bypassed (CAN-2004-0189). Two other bugs were also fixed with patches squid-2.4.STABLE7-url_escape.patch (a buffer overrun which does not appear to be exploitable) and squid-2.4.STABLE7-url_port.patch (a potential denial of service). For the stable distribution (woody) these problems have been fixed in version 2.4.6-2woody2. For the unstable distribution (sid) these problems have been fixed in version 2.5.5-1. We recommend that you update your squid package. |
Original Source
| Url : http://www.debian.org/security/2004/dsa-474 |
CAPEC : Common Attack Pattern Enumeration & Classification
| Id | Name |
|---|---|
| CAPEC-52 | Embedding NULL Bytes |
| CAPEC-53 | Postfix, Null Terminate, and Backslash |
| CAPEC-64 | Using Slashes and URL Encoding Combined to Bypass Validation Logic |
| CAPEC-72 | URL Encoding |
CWE : Common Weakness Enumeration
| % | Id | Name |
|---|
OVAL Definitions
| Definition Id: oval:org.mitre.oval:def:11354 | |||
| Oval ID: | oval:org.mitre.oval:def:11354 | ||
| Title: | The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") characterm, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists. | ||
| Description: | The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") characterm, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2004-0189 | Version: | 5 |
| Platform(s): | Red Hat Enterprise Linux 3 CentOS Linux 3 | Product(s): | |
| Definition Synopsis: | |||
| Definition Id: oval:org.mitre.oval:def:877 | |||
| Oval ID: | oval:org.mitre.oval:def:877 | ||
| Title: | Red Hat Squid ACL Bypass Vulnerability | ||
| Description: | The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") characterm, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2004-0189 | Version: | 4 |
| Platform(s): | Red Hat Linux 9 | Product(s): | |
| Definition Synopsis: | |||
| |||
| Definition Id: oval:org.mitre.oval:def:941 | |||
| Oval ID: | oval:org.mitre.oval:def:941 | ||
| Title: | Red Hat Enterprise 3 Squid ACL Bypass Vulnerability | ||
| Description: | The "%xx" URL decoding function in Squid 2.5STABLE4 and earlier allows remote attackers to bypass url_regex ACLs via a URL with a NULL ("%00") characterm, which causes Squid to use only a portion of the requested URL when comparing it against the access control lists. | ||
| Family: | unix | Class: | vulnerability |
| Reference(s): | CVE-2004-0189 | Version: | 4 |
| Platform(s): | Red Hat Enterprise Linux 3 | Product(s): | |
| Definition Synopsis: | |||
| |||
CPE : Common Platform Enumeration
OpenVAS Exploits
| Date | Description |
|---|---|
| 2008-09-24 | Name : Gentoo Security Advisory GLSA 200403-11 (Squid) File : nvt/glsa_200403_11.nasl |
| 2008-09-04 | Name : FreeBSD Ports: squid File : nvt/freebsd_squid12.nasl |
| 2008-01-17 | Name : Debian Security Advisory DSA 474-1 (squid) File : nvt/deb_474_1.nasl |
Open Source Vulnerability Database (OSVDB)
| Id | Description |
|---|---|
| 5916 | Squid Proxy %xx URL Encoding ACL Bypass Squid Web Proxy Cache contains a flaw that may allow a malicious user to bypass access control lists. The issue is triggered when sending a specially crafted URL request containing '%00' in it. It is possible that the flaw may allow unauthorized access resulting in a loss of integrity. |
Nessus® Vulnerability Scanner
| Date | Description |
|---|---|
| 2009-04-23 | Name : The remote FreeBSD host is missing a security-related update. File : freebsd_pkg_705e003a7f3611d896450020ed76ef5a.nasl - Type : ACT_GATHER_INFO |
| 2004-09-29 | Name : The remote Debian host is missing a security-related update. File : debian_DSA-474.nasl - Type : ACT_GATHER_INFO |
| 2004-08-30 | Name : The remote Gentoo host is missing one or more security-related patches. File : gentoo_GLSA-200403-11.nasl - Type : ACT_GATHER_INFO |
| 2004-07-31 | Name : The remote Mandrake Linux host is missing a security update. File : mandrake_MDKSA-2004-025.nasl - Type : ACT_GATHER_INFO |
| 2004-07-23 | Name : The remote Fedora Core host is missing a security update. File : fedora_2004-104.nasl - Type : ACT_GATHER_INFO |
| 2004-07-06 | Name : The remote Red Hat host is missing a security update. File : redhat-RHSA-2004-133.nasl - Type : ACT_GATHER_INFO |
| 2004-04-04 | Name : The remote service is vulnerable to an authentication bypass. File : squid_null_url_auth_bypass.nasl - Type : ACT_GATHER_INFO |
Alert History
| Date | Informations |
|---|---|
| 2014-02-17 11:33:12 |
|
