MEDIUM
squid: Memory leak in SNMP query rejection code
Published Nov 9, 2018
5.9
MEDIUMCVSS 3.0
EPSS 6.11%
Description
Squid before 4.4, when SNMP is enabled, allows a denial of service (Memory Leak) via an SNMP packet.
Affected products
No data.
Configuration 1
- < 4.4
Configuration 2
- 8.0
No data.
Red Hat Enterprise Linux 5
squid
Not affected
Red Hat Enterprise Linux 6
squid
Not affected
Red Hat Enterprise Linux 6
squid34
Will not fix
Red Hat Enterprise Linux 7
squid
Will not fix
Red Hat Enterprise Linux 8
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 6 | squid34 | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | squid | Will not fix | n/a |
| Red Hat Enterprise Linux 8 | squid | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
This issue did not affect the versions of squid as shipped with Red Hat Enterprise Linux 5 and 6 as they did not include the vulnerable code.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
5.9 MEDIUM NVD
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity High
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
4.3 MEDIUM NVD
AV:N/AC:M/Au:N/C:N/I:N/A:P
Access Vector Network
Access Complexity Medium
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.
6.11% 0.06114
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.06114
Score over time
2021–2026- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v1
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (60 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 6.11% (0.06114) | 93.22th | v5 (v2026.06.15) |
| Jun 15, 2026 | 6.11% (0.06114) | 92.49th | v5 (v2026.06.15) |
| Mar 4, 2026 | 11.35% (0.11349) | 93.42th | v4 (v2025.03.14) |
| Mar 1, 2026 | 6.18% (0.06179) | 90.70th | v4 (v2025.03.14) |
| Feb 4, 2026 | 11.35% (0.11349) | 93.37th | v4 (v2025.03.14) |
| Feb 1, 2026 | 6.18% (0.06179) | 90.65th | v4 (v2025.03.14) |
| Jan 4, 2026 | 11.35% (0.11349) | 93.32th | v4 (v2025.03.14) |
| Jan 1, 2026 | 6.18% (0.06179) | 90.59th | v4 (v2025.03.14) |
| Dec 28, 2025 | 11.35% (0.11349) | 93.32th | v4 (v2025.03.14) |
| Dec 27, 2025 | 5.49% (0.05491) | 89.96th | v4 (v2025.03.14) |
| Dec 4, 2025 | 11.35% (0.11349) | 93.27th | v4 (v2025.03.14) |
| Dec 1, 2025 | 6.18% (0.06179) | 90.51th | v4 (v2025.03.14) |
| Nov 21, 2025 | 11.35% (0.11349) | 93.26th | v4 (v2025.03.14) |
| Nov 18, 2025 | 7.36% (0.07358) | 90.80th | v4 (v2025.03.14) |
| Nov 4, 2025 | 11.35% (0.11349) | 93.23th | v4 (v2025.03.14) |
| Nov 1, 2025 | 6.18% (0.06179) | 90.46th | v4 (v2025.03.14) |
| Oct 28, 2025 | 11.35% (0.11349) | 93.22th | v4 (v2025.03.14) |
| Oct 27, 2025 | 5.49% (0.05491) | 89.80th | v4 (v2025.03.14) |
| Oct 4, 2025 | 11.35% (0.11349) | 93.28th | v4 (v2025.03.14) |
| Sep 4, 2025 | 5.49% (0.05491) | 89.86th | v4 (v2025.03.14) |
| Sep 1, 2025 | 2.88% (0.02876) | 85.84th | v4 (v2025.03.14) |
| Aug 20, 2025 | 5.59% (0.05591) | 89.94th | v4 (v2025.03.14) |
| Aug 6, 2025 | 10.70% (0.10704) | 93.02th | v4 (v2025.03.14) |
| Aug 1, 2025 | 5.90% (0.05904) | 90.31th | v4 (v2025.03.14) |
| Jul 30, 2025 | 10.70% (0.10704) | 93.01th | v4 (v2025.03.14) |
| Jul 6, 2025 | 23.21% (0.23208) | 95.66th | v4 (v2025.03.14) |
| Jul 1, 2025 | 13.88% (0.13878) | 94.02th | v4 (v2025.03.14) |
| Jun 19, 2025 | 23.21% (0.23208) | 95.64th | v4 (v2025.03.14) |
| Jun 5, 2025 | 18.75% (0.18746) | 94.93th | v4 (v2025.03.14) |
| Jun 1, 2025 | 12.02% (0.12023) | 93.43th | v4 (v2025.03.14) |
| May 11, 2025 | 18.75% (0.18746) | 94.91th | v4 (v2025.03.14) |
| May 1, 2025 | 12.02% (0.12023) | 93.41th | v4 (v2025.03.14) |
| Apr 20, 2025 | 18.75% (0.18746) | 94.89th | v4 (v2025.03.14) |
| Apr 19, 2025 | 12.02% (0.12023) | 93.36th | v4 (v2025.03.14) |
| Apr 18, 2025 | 18.75% (0.18746) | 94.89th | v4 (v2025.03.14) |
| Apr 17, 2025 | 12.02% (0.12023) | 93.35th | v4 (v2025.03.14) |
| Apr 14, 2025 | 18.75% (0.18746) | 94.80th | v4 (v2025.03.14) |
| Apr 13, 2025 | 12.02% (0.12023) | 93.16th | v4 (v2025.03.14) |
| Apr 7, 2025 | 18.75% (0.18746) | 94.79th | v4 (v2025.03.14) |
| Apr 5, 2025 | 12.02% (0.12023) | 93.17th | v4 (v2025.03.14) |
| Mar 30, 2025 | 18.75% (0.18746) | 94.78th | v4 (v2025.03.14) |
| Mar 29, 2025 | 22.35% (0.22347) | 93.23th | v4 (v2025.03.14) |
| Mar 28, 2025 | 12.02% (0.12023) | 93.15th | v4 (v2025.03.14) |
| Mar 19, 2025 | 18.75% (0.18746) | 94.55th | v4 (v2025.03.14) |
| Mar 18, 2025 | 9.94% (0.09944) | 92.49th | v4 (v2025.03.14) |
| Mar 17, 2025 | 15.76% (0.15760) | 94.23th | v4 (v2025.03.14) |
| Jul 20, 2024 | 1.73% (0.01726) | 88.03th | v3 (v2023.03.01) |
| Jun 28, 2024 | 1.73% (0.01726) | 87.98th | v3 (v2023.03.01) |
| Apr 1, 2024 | 2.21% (0.02205) | 89.22th | v3 (v2023.03.01) |
| Nov 3, 2023 | 2.97% (0.02970) | 89.78th | v3 (v2023.03.01) |
| Jul 8, 2023 | 3.03% (0.03026) | 89.56th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.09% (0.03092) | 89.50th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.11% (0.01108) | 55.18th | v2 (v2022.01.01) |
| Sep 17, 2022 | 1.11% (0.01108) | 53.57th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.11% (0.01108) | 51.54th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.11% (0.01108) | 29.61th | v2 (v2022.01.01) |
| Feb 3, 2022 | 1.81% (0.01806) | 35.10th | v1 |
| Jan 6, 2022 | 1.81% (0.01806) | 34.40th | v1 |
| Sep 1, 2021 | 1.81% (0.01806) | 74.37th | v1 |
| Apr 14, 2021 | 1.81% (0.01806) | 0.00th | v1 |
Weaknesses (2)
References (10)
- http://www.squid-cache.org/Advisories/SQUID-2018_5.txt x_refsource_MISCMitigationVendor Advisory
- http://www.squid-cache.org/Versions/v5/changesets/squid-5-644131ff1e00c1895d77561f561d29c104ba6b11.patch x_refsource_MISCPatchVendor Advisory
- https://access.redhat.com/security/cve/CVE-2018-19132 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1645154 Issue Tracking
- https://github.com/squid-cache/squid/pull/313 x_refsource_MISCPatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/11/msg00032.html mailing-listx_refsource_MLISTMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html mailing-listx_refsource_MLIST
- https://nvd.nist.gov/vuln/detail/CVE-2018-19132
- https://usn.ubuntu.com/4059-1/ vendor-advisoryx_refsource_UBUNTU
- https://www.cve.org/CVERecord?id=CVE-2018-19132
| Link | Providers | Tags |
|---|---|---|
| http://www.squid-cache.org/Advisories/SQUID-2018_5.txt | x_refsource_MISCMitigationVendor Advisory | |
| http://www.squid-cache.org/Versions/v5/changesets/squid-5-644131ff1e00c1895d77561f561d29c104ba6b11.patch | x_refsource_MISCPatchVendor Advisory | |
| https://access.redhat.com/security/cve/CVE-2018-19132 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1645154 | Issue Tracking | |
| https://github.com/squid-cache/squid/pull/313 | x_refsource_MISCPatchThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2018/11/msg00032.html | mailing-listx_refsource_MLISTMailing ListThird Party Advisory | |
| https://lists.debian.org/debian-lts-announce/2020/07/msg00009.html | mailing-listx_refsource_MLIST | |
| https://nvd.nist.gov/vuln/detail/CVE-2018-19132 | ||
| https://usn.ubuntu.com/4059-1/ | vendor-advisoryx_refsource_UBUNTU | |
| https://www.cve.org/CVERecord?id=CVE-2018-19132 |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Nov 9, 2018
Updated Aug 5, 2024
Reserved Nov 9, 2018
Link CVE-2018-19132
CISA Vulnrichment
Updated n/a