HIGH
squid: buffer overflow in cachemgr.cgi
Published Apr 25, 2016
8.8
HIGHCVSS 3.0
EPSS 18.28%
Description
Buffer overflow in cachemgr.cgi in Squid 2.x, 3.x before 3.5.17, and 4.x before 4.0.9 might allow remote attackers to cause a denial of service or execute arbitrary code by seeding manager reports with crafted data.
Affected products
No data.
Configuration 1
OR
- 12.04
- 14.04
- 15.10
- 16.04
Configuration 3
OR
- 2.0
- 2.1
- 2.2
- 2.3
- 2.4
- 2.5
- 2.6
- 2.7
- 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
Will not fix
| 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 | Will not fix | 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.
8.8 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction Required
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.
18.28% 0.18280
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.18280
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 (47 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 18.28% (0.18280) | 97.14th | v5 (v2026.06.15) |
| Sep 22, 2026 | 18.28% (0.18280) | 97.09th | v5 (v2026.06.15) |
| Sep 21, 2026 | 27.48% (0.27477) | 98.03th | v5 (v2026.06.15) |
| Sep 6, 2026 | 18.28% (0.18280) | 97.02th | v5 (v2026.06.15) |
| Sep 5, 2026 | 27.48% (0.27477) | 97.99th | v5 (v2026.06.15) |
| Aug 30, 2026 | 18.28% (0.18280) | 97.01th | v5 (v2026.06.15) |
| Aug 28, 2026 | 27.48% (0.27477) | 97.97th | v5 (v2026.06.15) |
| Aug 24, 2026 | 18.28% (0.18280) | 96.99th | v5 (v2026.06.15) |
| Aug 23, 2026 | 27.48% (0.27477) | 97.97th | v5 (v2026.06.15) |
| Jul 20, 2026 | 18.28% (0.18280) | 96.90th | v5 (v2026.06.15) |
| Jun 15, 2026 | 16.82% (0.16821) | 96.64th | v5 (v2026.06.15) |
| May 5, 2026 | 5.91% (0.05912) | 90.65th | v4 (v2025.03.14) |
| Mar 25, 2026 | 10.32% (0.10320) | 93.13th | v4 (v2025.03.14) |
| Mar 4, 2026 | 2.74% (0.02738) | 85.72th | v4 (v2025.03.14) |
| Mar 1, 2026 | 8.85% (0.08854) | 92.42th | v4 (v2025.03.14) |
| Feb 18, 2026 | 2.74% (0.02738) | 85.65th | v4 (v2025.03.14) |
| Feb 4, 2026 | 4.91% (0.04905) | 89.33th | v4 (v2025.03.14) |
| Feb 1, 2026 | 8.85% (0.08854) | 92.37th | v4 (v2025.03.14) |
| Jan 4, 2026 | 4.91% (0.04905) | 89.27th | v4 (v2025.03.14) |
| Jan 1, 2026 | 8.85% (0.08854) | 92.33th | v4 (v2025.03.14) |
| Dec 28, 2025 | 4.91% (0.04905) | 89.25th | v4 (v2025.03.14) |
| Dec 27, 2025 | 1.87% (0.01873) | 82.70th | v4 (v2025.03.14) |
| Dec 25, 2025 | 4.91% (0.04905) | 89.26th | v4 (v2025.03.14) |
| Dec 4, 2025 | 3.67% (0.03673) | 87.47th | v4 (v2025.03.14) |
| Dec 1, 2025 | 6.72% (0.06720) | 90.95th | v4 (v2025.03.14) |
| Nov 4, 2025 | 3.67% (0.03673) | 87.39th | v4 (v2025.03.14) |
| Nov 1, 2025 | 6.72% (0.06720) | 90.88th | v4 (v2025.03.14) |
| Oct 28, 2025 | 3.67% (0.03673) | 87.37th | v4 (v2025.03.14) |
| Oct 27, 2025 | 1.39% (0.01387) | 79.73th | v4 (v2025.03.14) |
| Oct 4, 2025 | 3.67% (0.03673) | 87.41th | v4 (v2025.03.14) |
| Oct 1, 2025 | 6.72% (0.06720) | 90.94th | v4 (v2025.03.14) |
| Jul 30, 2025 | 1.79% (0.01787) | 81.95th | v4 (v2025.03.14) |
| Jul 4, 2025 | 5.51% (0.05513) | 89.78th | v4 (v2025.03.14) |
| Jul 1, 2025 | 9.04% (0.09036) | 92.28th | v4 (v2025.03.14) |
| Jun 19, 2025 | 5.51% (0.05513) | 89.74th | v4 (v2025.03.14) |
| Mar 30, 2025 | 2.71% (0.02710) | 84.62th | v4 (v2025.03.14) |
| Mar 29, 2025 | 4.86% (0.04857) | 82.19th | v4 (v2025.03.14) |
| Mar 17, 2025 | 2.71% (0.02710) | 84.93th | v4 (v2025.03.14) |
| Dec 17, 2024 | 4.10% (0.04104) | 92.05th | v3 (v2023.03.01) |
| May 25, 2024 | 1.39% (0.01391) | 86.35th | v3 (v2023.03.01) |
| Feb 16, 2024 | 1.36% (0.01360) | 85.82th | v3 (v2023.03.01) |
| Dec 12, 2023 | 1.05% (0.01053) | 82.32th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.91% (0.00907) | 80.32th | v3 (v2023.03.01) |
| Mar 6, 2023 | 5.86% (0.05857) | 90.50th | v2 (v2022.01.01) |
| Apr 1, 2022 | 5.86% (0.05857) | 89.59th | v2 (v2022.01.01) |
| Mar 6, 2022 | 5.86% (0.05857) | 77.77th | v2 (v2022.01.01) |
| Feb 4, 2022 | 5.20% (0.05203) | 75.22th | 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_CONFIRMThird Party Advisory
- 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/1035646 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://www.squid-cache.org/Advisories/SQUID-2016_5.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-2016-4051 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1329126 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2016-4051
- https://security.gentoo.org/glsa/201607-01 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2016-4051
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-2016-4051
CISA Vulnrichment
Updated n/a