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Fencer Vulns
medium 5.0

CVE-2005-0095 json

The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed W…

published 2005-01-15 21 y ago modified 2026-06-16 4 mo ago also EUVD-2005-0096

cvss
5.0
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
68.8%
EPSS 68.8% chance of exploitation in 30 days, percentile 99.3%
public exploits
0
none known

Summary

The WCCP message parsing code in Squid 2.5.STABLE7 and earlier allows remote attackers to cause a denial of service (crash) via malformed WCCP messages with source addresses that are spoofed to reference Squid's home router and invalid WCCP_I_SEE_YOU cache numbers.

Patch / fix

  • squid Debian 14, Debian 13, Debian 12 2.5.7-4

debian advisories DEBIAN-CVE-2005-0095

  • squid RHEL 3 7:2.5.STABLE3-6.3E.7
  • squid RHEL 4 7:2.5.STABLE6-3.4E.3

red hat advisories RHSA-2005:061RHSA-2005:060

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2005-0095 updated

security flaw

  • Red Hat Desktop version 3 squid 2.5.STABLE3-6.3E.7 Red Hat Enterprise Linux AS version 3 squid 2.5.STABLE3-6.3E.7
    fixed: vendor fix RHSA-2005:061
  • Red Hat Enterprise Linux AS version 4 squid 2.5.STABLE6-3.4E.3 Red Hat Enterprise Linux Desktop version 4 squid 2.5.STABLE6-3.4E.3
    fixed: vendor fix RHSA-2005:060
  • Red Hat Enterprise Linux ES version 3 squid 2.5.STABLE3-6.3E.7
    fixed: vendor fix RHSA-2005:061
  • Red Hat Enterprise Linux ES version 4 squid 2.5.STABLE6-3.4E.3
    fixed: vendor fix RHSA-2005:060
  • Red Hat Enterprise Linux WS version 3 squid 2.5.STABLE3-6.3E.7
    fixed: vendor fix RHSA-2005:061
  • Red Hat Enterprise Linux WS version 4 squid 2.5.STABLE6-3.4E.3
    fixed: vendor fix RHSA-2005:060

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

68.78% chance of exploitation in the next 30 days, higher than 99.3% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • squid-cache.org http://www.squid-cache.org/Versions/v2/2.5/bugs/squid-2.5.STABLE7-wccp_denial_of_service.patch referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:N/I:N/A:P

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.