HIGH
squid: multiple issues in ESI processing
Published Apr 25, 2016
8.1
HIGHCVSS 3.0
EPSS 12.87%
Description
Multiple stack-based buffer overflows in Squid 3.x before 3.5.17 and 4.x before 4.0.9 allow remote HTTP servers to cause a denial of service or execute arbitrary code via crafted Edge Side Includes (ESI) responses.
Affected products
No data.
Configuration 1
OR
- 12.04
- 14.04
- 15.10
- 16.04
Configuration 2
OR
- 3.0
- 3.1
- 3.1.0.1
- 3.1.0.2
- 3.1.0.3
- 3.1.0.4
- 3.1.0.5
- 3.1.0.6
- 3.1.0.7
- 3.1.0.8
- 3.1.0.9
- 3.1.0.10
- 3.1.0.11
- 3.1.0.12
- 3.1.0.13
- 3.1.0.14
- 3.1.0.15
- 3.1.0.16
- 3.1.0.17
- 3.1.0.18
- 3.1.1
- 3.1.2
- 3.1.3
- 3.1.4
- 3.1.5
- 3.1.5.1
- 3.1.6
- 3.1.7
- 3.1.8
- 3.1.9
- 3.1.10
- 3.1.11
- 3.1.12
- 3.1.12.1
- 3.1.12.2
- 3.1.12.3
- 3.1.13
- 3.1.14
- 3.1.15
- 3.1.16
- 3.1.17
- 3.1.18
- 3.1.19
- 3.1.20
- 3.1.21
- 3.1.22
- 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
- 3.2.13
- 3.3.0
- 3.3.0.1
- 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
- 3.3.8
- 3.3.9
- 3.3.10
- 3.3.11
- 3.3.12
- 3.3.13
- 3.3.14
- 3.4.0.1
- 3.4.0.2
- 3.4.0.3
- 3.4.1
- 3.4.2
- 3.4.3
- 3.4.4
- 3.4.4.1
- 3.4.4.2
- 3.4.8
- 3.4.9
- 3.4.10
- 3.4.11
- 3.4.12
- 3.4.13
- 3.4.14
- 3.5.0.1
- 3.5.0.2
- 3.5.0.3
- 3.5.0.4
- 3.5.1
- 3.5.2
- 3.5.3
- 3.5.4
- 3.5.5
- 3.5.6
- 3.5.7
- 3.5.8
- 3.5.9
- 3.5.10
- 3.5.11
- 3.5.12
- 3.5.13
- 3.5.14
- 3.5.15
- 3.5.16
- 4.0.1
- 4.0.2
- 4.0.3
- 4.0.4
- 4.0.5
- 4.0.6
- 4.0.7
- 4.0.8
No data.
Red Hat Enterprise Linux 6
squid-7:3.1.23-16.el6_8.4
Fixed · RHSA-2016:1138
Red Hat Enterprise Linux 6
squid34-7:3.4.14-9.el6_8.3
Fixed · RHSA-2016:1140
Red Hat Enterprise Linux 7
squid-7:3.3.8-26.el7_2.3
Fixed · RHSA-2016:1139
Red Hat Enterprise Linux 5
squid
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | squid-7:3.1.23-16.el6_8.4 | Fixed | RHSA-2016:1138 |
| Red Hat Enterprise Linux 6 | squid34-7:3.4.14-9.el6_8.3 | Fixed | RHSA-2016:1140 |
| Red Hat Enterprise Linux 7 | squid-7:3.3.8-26.el7_2.3 | Fixed | RHSA-2016:1139 |
| Red Hat Enterprise Linux 5 | 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.
8.1 HIGH NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact High
Integrity Impact High
Availability Impact High
6.8 MEDIUM NVD
AV:N/AC:M/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
12.87% 0.12867
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.12867
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 (45 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 12.87% (0.12867) | 96.19th | v5 (v2026.06.15) |
| Jun 28, 2026 | 12.87% (0.12867) | 95.81th | v5 (v2026.06.15) |
| Jun 15, 2026 | 10.23% (0.10227) | 95.07th | v5 (v2026.06.15) |
| May 5, 2026 | 23.62% (0.23622) | 96.02th | v4 (v2025.03.14) |
| Mar 29, 2026 | 35.33% (0.35330) | 97.02th | v4 (v2025.03.14) |
| Mar 26, 2026 | 32.23% (0.32234) | 96.80th | v4 (v2025.03.14) |
| Mar 4, 2026 | 12.51% (0.12508) | 93.79th | v4 (v2025.03.14) |
| Mar 1, 2026 | 17.63% (0.17630) | 95.00th | v4 (v2025.03.14) |
| Feb 4, 2026 | 12.51% (0.12508) | 93.75th | v4 (v2025.03.14) |
| Feb 1, 2026 | 17.63% (0.17630) | 94.95th | v4 (v2025.03.14) |
| Jan 4, 2026 | 12.51% (0.12508) | 93.70th | v4 (v2025.03.14) |
| Jan 1, 2026 | 17.63% (0.17630) | 94.92th | v4 (v2025.03.14) |
| Dec 28, 2025 | 12.51% (0.12508) | 93.70th | v4 (v2025.03.14) |
| Dec 27, 2025 | 6.22% (0.06223) | 90.61th | v4 (v2025.03.14) |
| Dec 4, 2025 | 12.51% (0.12508) | 93.66th | v4 (v2025.03.14) |
| Dec 1, 2025 | 17.63% (0.17630) | 94.88th | v4 (v2025.03.14) |
| Nov 4, 2025 | 12.51% (0.12508) | 93.63th | v4 (v2025.03.14) |
| Nov 1, 2025 | 17.63% (0.17630) | 94.86th | v4 (v2025.03.14) |
| Oct 28, 2025 | 12.51% (0.12508) | 93.61th | v4 (v2025.03.14) |
| Oct 27, 2025 | 6.22% (0.06223) | 90.49th | v4 (v2025.03.14) |
| Oct 4, 2025 | 12.51% (0.12508) | 93.66th | v4 (v2025.03.14) |
| Oct 1, 2025 | 17.63% (0.17630) | 94.89th | v4 (v2025.03.14) |
| Sep 4, 2025 | 6.22% (0.06223) | 90.54th | v4 (v2025.03.14) |
| Sep 1, 2025 | 5.01% (0.05009) | 89.36th | v4 (v2025.03.14) |
| Aug 4, 2025 | 6.22% (0.06223) | 90.52th | v4 (v2025.03.14) |
| Aug 1, 2025 | 5.01% (0.05009) | 89.38th | v4 (v2025.03.14) |
| Jul 30, 2025 | 6.83% (0.06835) | 90.94th | v4 (v2025.03.14) |
| Jul 4, 2025 | 13.63% (0.13625) | 93.91th | v4 (v2025.03.14) |
| Jul 1, 2025 | 17.63% (0.17630) | 94.81th | v4 (v2025.03.14) |
| Jun 10, 2025 | 13.63% (0.13625) | 93.86th | v4 (v2025.03.14) |
| Jun 4, 2025 | 11.65% (0.11655) | 93.28th | v4 (v2025.03.14) |
| Jun 1, 2025 | 17.63% (0.17630) | 94.77th | v4 (v2025.03.14) |
| May 4, 2025 | 11.65% (0.11655) | 93.25th | v4 (v2025.03.14) |
| May 1, 2025 | 17.63% (0.17630) | 94.74th | v4 (v2025.03.14) |
| Mar 30, 2025 | 11.65% (0.11655) | 93.02th | v4 (v2025.03.14) |
| Mar 29, 2025 | 18.97% (0.18972) | 92.31th | v4 (v2025.03.14) |
| Mar 17, 2025 | 11.65% (0.11655) | 93.11th | v4 (v2025.03.14) |
| Dec 31, 2024 | 2.16% (0.02160) | 88.97th | v3 (v2023.03.01) |
| May 25, 2024 | 4.88% (0.04884) | 92.75th | v3 (v2023.03.01) |
| Jul 27, 2023 | 4.29% (0.04287) | 91.15th | v3 (v2023.03.01) |
| May 8, 2023 | 3.75% (0.03750) | 90.43th | v3 (v2023.03.01) |
| Mar 7, 2023 | 2.05% (0.02054) | 87.20th | v3 (v2023.03.01) |
| Mar 6, 2023 | 3.74% (0.03740) | 85.11th | v2 (v2022.01.01) |
| Apr 1, 2022 | 3.74% (0.03740) | 83.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 3.74% (0.03740) | 66.74th | v2 (v2022.01.01) |
Weaknesses (2)
References (21)
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00010.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00040.html vendor-advisoryx_refsource_SUSE
- http://lists.opensuse.org/opensuse-updates/2016-08/msg00069.html vendor-advisoryx_refsource_SUSE
- http://www.debian.org/security/2016/dsa-3625 vendor-advisoryx_refsource_DEBIAN
- http://www.openwall.com/lists/oss-security/2016/04/20/6 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/04/20/9 mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- http://www.oracle.com/technetwork/security-advisory/cpujul2016-2881720.html x_refsource_CONFIRMPatchThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinapr2016-2952096.html x_refsource_CONFIRM
- http://www.securityfocus.com/bid/86788 vdb-entryx_refsource_BID
- http://www.securityfocus.com/bid/91787 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.securitytracker.com/id/1035647 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.squid-cache.org/Advisories/SQUID-2016_6.txt x_refsource_CONFIRMVendor Advisory
- http://www.ubuntu.com/usn/USN-2995-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- https://access.redhat.com/errata/RHSA-2016:1138 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2016:1139 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/errata/RHSA-2016:1140 vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2016-4052 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1329136 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-4052
- https://security.gentoo.org/glsa/201607-01 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-4052
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 25, 2016
Updated Aug 6, 2024
Reserved Apr 20, 2016
Link CVE-2016-4052
CISA Vulnrichment
Updated n/a