Squid denial of service flaw
Published Feb 8, 2009
5.0
MEDIUMCVSS 2.0
EPSS 71.99%
Description
Squid 2.7 to 2.7.STABLE5, 3.0 to 3.0.STABLE12, and 3.1 to 3.1.0.4 allows remote attackers to cause a denial of service via an HTTP request with an invalid version number, which triggers a reachable assertion in (1) HttpMsg.c and (2) HttpStatusLine.c.
Affected products
No data.
- 2.7.stable1
- 2.7.stable2
- 2.7.stable3
- 2.7.stable4
- 2.7.stable5
- 3.0.stable1
- 3.0.stable2
- 3.0.stable3
- 3.0.stable4
- 3.0.stable5
- 3.0.stable6
- 3.0.stable7
- 3.0.stable8
- 3.0.stable9
- 3.0.stable10
- 3.0.stable11
- 3.0.stable12
- 3.1
- 3.1.0.1
- 3.1.0.2
- 3.1.0.3
- 3.1.0.4
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
Red Hat statement
Not vulnerable. This issue did not affect the version of Squid as shipped with Red Hat Enterprise Linux 2.1, 3, 4, or 5.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:N/A:P
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (13 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 71.99% (0.71986) | 99.41th | v5 (v2026.06.15) |
| Jun 15, 2026 | 71.99% (0.71986) | 99.35th | v5 (v2026.06.15) |
| Jan 1, 2026 | 76.17% (0.76172) | 98.89th | v4 (v2025.03.14) |
| Aug 27, 2025 | 77.41% (0.77407) | 98.94th | v4 (v2025.03.14) |
| Mar 30, 2025 | 79.76% (0.79758) | 99.04th | v4 (v2025.03.14) |
| Mar 29, 2025 | 81.32% (0.81318) | 98.94th | v4 (v2025.03.14) |
| Mar 17, 2025 | 79.76% (0.79758) | 99.05th | v4 (v2025.03.14) |
| Dec 17, 2024 | 83.67% (0.83669) | 98.68th | v3 (v2023.03.01) |
| Dec 12, 2024 | 94.92% (0.94918) | 99.38th | v3 (v2023.03.01) |
| Mar 7, 2023 | 95.14% (0.95142) | 98.84th | v3 (v2023.03.01) |
| Mar 6, 2023 | 12.57% (0.12567) | 95.52th | v2 (v2022.01.01) |
| Apr 1, 2022 | 12.57% (0.12567) | 95.18th | v2 (v2022.01.01) |
| Feb 4, 2022 | 12.57% (0.12567) | 90.03th | v2 (v2022.01.01) |
References (15)
- http://lists.opensuse.org/opensuse-security-announce/2009-03/msg00000.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/33731 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/34467 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://security.gentoo.org/glsa/glsa-200903-38.xml vendor-advisoryx_refsource_GENTOO
- http://www.mandriva.com/security/advisories?name=MDVSA-2009:034 vendor-advisoryx_refsource_MANDRIVA
- http://www.securityfocus.com/archive/1/500653/100/0/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/33604 vdb-entryx_refsource_BIDExploitPatch
- http://www.securitytracker.com/id?1021684 vdb-entryx_refsource_SECTRACK
- http://www.squid-cache.org/Advisories/SQUID-2009_1.txt x_refsource_CONFIRMVendor Advisory
- http://www.squid-cache.org/Versions/v2/2.7/changesets/12432.patch x_refsource_CONFIRMVendor Advisory
- https://access.redhat.com/security/cve/CVE-2009-0478 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=484246 x_refsource_CONFIRMIssue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2009-0478
- https://www.cve.org/CVERecord?id=CVE-2009-0478
- https://www.exploit-db.com/exploits/8021 exploitx_refsource_EXPLOIT-DB
Change history (0)
No recorded changes yet.