CVE-2005-0173
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username...
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
Exploit likelihood
What each source reports
NVD Score used
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
- Record
CVE-2005-0173- CVSS 2.0
- 7.5 High
AV:N/AC:L/Au:N/C:P/I:P/A:P - Updated
- 2026-11-02
CVE List No score
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
- Record
CVE-2005-0173- Updated
- 2026-11-02
EUVDEUVD-2005-0174 No score
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
- Record
EUVD-2005-0174- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-2r4j-x5mr-ch9c No score
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username...
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
- Record
GHSA-2r4j-x5mr-ch9c- Updated
- 2026-11-02
OSV No score
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
- Record
CVE-2005-0173- Updated
- 2026-11-02
OSVDEBIAN-CVE-2005-0173 No score
squid_ldap_auth in Squid 2.5 and earlier allows remote authenticated users to bypass username-based Access Control Lists (ACLs) via a username with a space at the beginning or end, which is ignored by the LDAP server.
- Record
DEBIAN-CVE-2005-0173- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
squidDebian:12 |
before 2.5.7-4 | 2.5.7-4 |
squidDebian:13 |
before 2.5.7-4 | 2.5.7-4 |
squidDebian:14 |
before 2.5.7-4 | 2.5.7-4 |
squidDebian:3.0 |
before 2.4.6-2woody6, plus listed versions 2.4.6-2woody4 |
2.4.6-2woody6 |
squidRed Hat:enterprise_linux:4::as |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squid-debuginfoRed Hat:enterprise_linux:4::as |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squidRed Hat:enterprise_linux:4::desktop |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squid-debuginfoRed Hat:enterprise_linux:4::desktop |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squidRed Hat:enterprise_linux:4::es |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squid-debuginfoRed Hat:enterprise_linux:4::es |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
Show 10 moreShow less
| Package | Affected | Fixed |
|---|---|---|
squidRed Hat:enterprise_linux:4::ws |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squid-debuginfoRed Hat:enterprise_linux:4::ws |
before 7:2.5.STABLE6-3.4E.3 | 7:2.5.STABLE6-3.4E.3 |
squidRed Hat:enterprise_linux:3::as |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squid-debuginfoRed Hat:enterprise_linux:3::as |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squidRed Hat:enterprise_linux:3::desktop |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squid-debuginfoRed Hat:enterprise_linux:3::desktop |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squidRed Hat:enterprise_linux:3::es |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squid-debuginfoRed Hat:enterprise_linux:3::es |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squidRed Hat:enterprise_linux:3::ws |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
squid-debuginfoRed Hat:enterprise_linux:3::ws |
before 7:2.5.STABLE3-6.3E.7 | 7:2.5.STABLE3-6.3E.7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2005-0173 is a high vulnerability (CVSS 7.5) in Squid, published February 4, 2005. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 31.9%, the 98th percentile. Fixed in squid 2.5.7-4.
References
distro.conectiva.com.br/atualizacoes?id=a&anuncio=000923
kb.cert.org/vuls/id/924198
squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-ldap_spaces.patch
securityfocus.com/bid/12431
oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10251
fedoranews.org/updates/FEDORA--.shtml
Show 61 moreShow less
redhat.com/support/errata/RHSA-2005-061.html
mandriva.com/security/advisories?name=MDKSA-2005:034
debian.org/security/2005/dsa-667
marc.info?l=bugtraq&m=110780531820947&w=2
novell.com/linux/security/advisories/2005_06_squid.html
nvd.nist.gov/vuln/detail/CVE-2005-0173
github.com/advisories/GHSA-2r4j-x5mr-ch9c
security-tracker.debian.org/tracker/CVE-2005-0173
access.redhat.com/errata/RHSA-2005:060
bugzilla.redhat.com/show_bug.cgi?id=145545
security.access.redhat.com/data/csaf/v2/advisories/2005/rhsa-2005_060.json
cve.org/CVERecord?id=CVE-2005-0094