CVE-2023-5824
Squid: dos against http and https
02 Description
Squid: dos against http and https
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 3.28% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 88.4% of scored records. A rank, not a probability.
- NVD base score
- 7.5 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Important. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2023-11-03 07:56Z2 YR AGO
- Last updated
- 2025-11-06 20:51Z11 MO AGO
- Reserved
- 2023-10-27
- Assigning CNA
- redhat
- Record state
- PUBLISHED
- Severity
- High (CVSS 7.5)
- CNA CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Weaknesses
- CWE-755Improper Handling of Exceptional ConditionsClass
- Data version
- 5.2
- Document digest
- f74c55816e2ef97f4bfb4f5a451e689d0a26186c90a315eda72ba1efedc579c9
05 Affected products
06 References
- access.redhat.comRHSA-2023:7465https://access.redhat.com/errata/RHSA-2023:7465
- access.redhat.comRHSA-2023:7668https://access.redhat.com/errata/RHSA-2023:7668
- access.redhat.comRHSA-2024:0072https://access.redhat.com/errata/RHSA-2024:0072
- access.redhat.comRHSA-2024:0397https://access.redhat.com/errata/RHSA-2024:0397
- access.redhat.comRHSA-2024:0771https://access.redhat.com/errata/RHSA-2024:0771
- access.redhat.comRHSA-2024:0772https://access.redhat.com/errata/RHSA-2024:0772
- access.redhat.comRHSA-2024:0773https://access.redhat.com/errata/RHSA-2024:0773
- access.redhat.comRHSA-2024:1153https://access.redhat.com/errata/RHSA-2024:1153
- access.redhat.comhttps://access.redhat.com/security/cve/CVE-2023-5824
- bugzilla.redhat.comRHBZ#2245914https://bugzilla.redhat.com/show_bug.cgi?id=2245914
- github.comhttps://github.com/squid-cache/squid/security/advisories/GHSA-543m-w2m2-g255
- security.netapp.comhttps://security.netapp.com/advisory/ntap-20231130-0003/
- lists.debian.orghttps://lists.debian.org/debian-lts-announce/2025/09/msg00027.html
07 Fixed in
AlmaLinux 8
- libecap Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- libecap-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- squid Fixed in 7:4.15-7.module_el8.9.0+3696+b881db49.3
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
AlmaLinux 9
- squid Fixed in 7:5.5-6.el9_3.2
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- libecap Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- libecap-devel Fixed
A version is affected if any line below covers it.
- Affected before 1.0.1-2.module_el8.6.0+2741+01592ae8
- Affected before 1.0.1-2.module_el8.6.0+3048+383bc947
- squid Fixed in 7:4.15-7.module_el8.9.0+3696+b881db49.3
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 9
- squid Fixed in 7:5.5-6.el9_3.2
Derived from AlmaLinux 9. Partial coverage: only packages taken from AlmaLinux 9 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- squid Fixed in 5.7-2+deb12u3
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- squid Fixed in 6.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- squid Fixed in 6.5-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 20.04 LTS
- squid Fixed in 4.10-1ubuntu1.12
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- squid Fixed in 5.7-0ubuntu0.22.04.4
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- squid Fixed in 6.5-1ubuntu1
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- squid3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 18.04 LTS
- squid3 No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.