MEDIUM
squid: Denial of service when processing specially-crafted HTTP requests (SQUID-2013:3)
Published Sep 16, 2013
5.0
MEDIUMCVSS 2.0
EPSS 80.45%
Description
client_side_request.cc in Squid 3.2.x before 3.2.13 and 3.3.x before 3.3.8 allows remote attackers to cause a denial of service via a crafted port number in a HTTP Host header.
Affected products
No data.
Configuration 1
OR
- 3.3.0
- 3.3.0.2
- 3.3.0.3
- 3.3.1
- 3.3.2
- 3.3.3
- 3.3.4
- 3.3.5
- 3.3.6
- 3.3.7
Configuration 3
OR
- 3.2.0.1
- 3.2.0.2
- 3.2.0.3
- 3.2.0.4
- 3.2.0.5
- 3.2.0.6
- 3.2.0.7
- 3.2.0.8
- 3.2.0.9
- 3.2.0.10
- 3.2.0.11
- 3.2.0.12
- 3.2.0.13
- 3.2.0.14
- 3.2.0.15
- 3.2.0.16
- 3.2.0.17
- 3.2.0.18
- 3.2.0.19
- 3.2.1
- 3.2.2
- 3.2.3
- 3.2.4
- 3.2.5
- 3.2.6
- 3.2.7
- 3.2.8
- 3.2.9
- 3.2.10
- 3.2.11
- 3.2.12
No data.
Red Hat Enterprise Linux 5
squid
Not affected
Red Hat Enterprise Linux 6
squid
Not affected
Red Hat Enterprise Linux 7
squid
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | squid | Not affected | n/a |
| Red Hat Enterprise Linux 6 | squid | Not affected | n/a |
| Red Hat Enterprise Linux 7 | squid | Not affected | n/a |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
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.
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
80.45% 0.80451
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.80451
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 (34 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 80.45% (0.80451) | 99.61th | v5 (v2026.06.15) |
| Jun 15, 2026 | 80.45% (0.80451) | 99.57th | v5 (v2026.06.15) |
| May 13, 2026 | 68.92% (0.68916) | 98.65th | v4 (v2025.03.14) |
| Mar 20, 2026 | 69.94% (0.69936) | 98.65th | v4 (v2025.03.14) |
| Jan 5, 2026 | 74.31% (0.74312) | 98.79th | v4 (v2025.03.14) |
| Dec 28, 2025 | 75.78% (0.75783) | 98.86th | v4 (v2025.03.14) |
| Dec 27, 2025 | 66.00% (0.66001) | 98.46th | v4 (v2025.03.14) |
| Oct 28, 2025 | 75.78% (0.75783) | 98.85th | v4 (v2025.03.14) |
| Oct 27, 2025 | 66.00% (0.66001) | 98.45th | v4 (v2025.03.14) |
| Oct 1, 2025 | 75.78% (0.75783) | 98.87th | v4 (v2025.03.14) |
| Jul 30, 2025 | 66.00% (0.66001) | 98.43th | v4 (v2025.03.14) |
| Mar 30, 2025 | 76.69% (0.76691) | 98.89th | v4 (v2025.03.14) |
| Mar 29, 2025 | 81.44% (0.81435) | 98.95th | v4 (v2025.03.14) |
| Mar 17, 2025 | 76.69% (0.76691) | 98.90th | v4 (v2025.03.14) |
| Dec 17, 2024 | 90.64% (0.90645) | 99.09th | v3 (v2023.03.01) |
| Dec 10, 2024 | 93.26% (0.93263) | 99.19th | v3 (v2023.03.01) |
| Sep 17, 2024 | 94.84% (0.94837) | 99.32th | v3 (v2023.03.01) |
| Jul 22, 2024 | 17.77% (0.17766) | 96.21th | v3 (v2023.03.01) |
| May 24, 2024 | 16.63% (0.16627) | 96.02th | v3 (v2023.03.01) |
| May 10, 2024 | 14.44% (0.14437) | 95.71th | v3 (v2023.03.01) |
| Apr 25, 2024 | 10.96% (0.10958) | 95.04th | v3 (v2023.03.01) |
| Apr 12, 2024 | 10.28% (0.10283) | 94.87th | v3 (v2023.03.01) |
| Mar 15, 2024 | 8.63% (0.08627) | 94.32th | v3 (v2023.03.01) |
| Feb 8, 2024 | 7.02% (0.07017) | 93.70th | v3 (v2023.03.01) |
| Dec 21, 2023 | 95.13% (0.95129) | 99.14th | v3 (v2023.03.01) |
| Jul 30, 2023 | 95.62% (0.95624) | 99.12th | v3 (v2023.03.01) |
| Jun 13, 2023 | 95.74% (0.95738) | 99.11th | v3 (v2023.03.01) |
| Mar 13, 2023 | 96.11% (0.96106) | 99.12th | v3 (v2023.03.01) |
| Mar 7, 2023 | 96.10% (0.96100) | 99.11th | v3 (v2023.03.01) |
| Mar 6, 2023 | 7.91% (0.07911) | 93.25th | v2 (v2022.01.01) |
| Feb 18, 2023 | 7.91% (0.07911) | 92.97th | v2 (v2022.01.01) |
| Apr 1, 2022 | 8.60% (0.08595) | 93.38th | v2 (v2022.01.01) |
| Feb 28, 2022 | 8.60% (0.08595) | 82.96th | v2 (v2022.01.01) |
| Feb 4, 2022 | 9.26% (0.09257) | 87.09th | v2 (v2022.01.01) |
Weaknesses (1)
References (10)
- http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html vendor-advisoryx_refsource_SUSE
- http://secunia.com/advisories/54142 third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://secunia.com/advisories/54834 third-party-advisoryx_refsource_SECUNIA
- http://www.squid-cache.org/Advisories/SQUID-2013_3.txt x_refsource_CONFIRMVendor Advisory
- http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch x_refsource_CONFIRMPatch
- http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch x_refsource_CONFIRM
- https://access.redhat.com/security/cve/CVE-2013-4123 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=984632 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2013-4123
- https://www.cve.org/CVERecord?id=CVE-2013-4123
| Link | Providers | Tags |
|---|---|---|
| http://lists.opensuse.org/opensuse-updates/2013-09/msg00024.html | vendor-advisoryx_refsource_SUSE | |
| http://secunia.com/advisories/54142 | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://secunia.com/advisories/54834 | third-party-advisoryx_refsource_SECUNIA | |
| http://www.squid-cache.org/Advisories/SQUID-2013_3.txt | x_refsource_CONFIRMVendor Advisory | |
| http://www.squid-cache.org/Versions/v3/3.2/changesets/squid-3.2-11826.patch | x_refsource_CONFIRMPatch | |
| http://www.squid-cache.org/Versions/v3/3.3/changesets/squid-3.3-12591.patch | x_refsource_CONFIRM | |
| https://access.redhat.com/security/cve/CVE-2013-4123 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=984632 | Issue Tracking | |
| https://nvd.nist.gov/vuln/detail/CVE-2013-4123 | ||
| https://www.cve.org/CVERecord?id=CVE-2013-4123 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner redhat
Published Sep 16, 2013
Updated Sep 17, 2024
Reserved Jun 12, 2013
Link CVE-2013-4123
CISA Vulnrichment
Updated n/a