synced 12 MIN AGO
01 Record

CVE-2023-46847

Squid: denial of service in http digest authentication

HighPUBLISHEDCNA: redhat
CNA base score8.6 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
View raw JSON

02 Description

Squid: denial of service in http digest authentication

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
78.51% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 99.5% 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 2026-08-07.
Red Hat severity
Critical. 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 07:58Z2 YR AGO
Last updated
2026-08-07 01:10Z2 MO AGO
Reserved
2023-10-27
Assigning CNA
redhat
Record state
PUBLISHED
Severity
High (CVSS 8.6)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
Weaknesses
  • CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')Base
Data version
5.2
Document digest
44a2fbcf1f066b1eab3b21fba5d51e015f1b289cd802feb91504e3ea926f95df

05 Affected products

VendorProductVersionsPlatforms
Red HatRed Hat Enterprise Linux 6 Extended Lifecycle SupportNot specified—
Red HatRed Hat Enterprise Linux 7Not specified—
Red HatRed Hat Enterprise Linux 7.6 Advanced Update SupportNot specified—
Red HatRed Hat Enterprise Linux 7.7 Advanced Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8Not specified—
Red HatRed Hat Enterprise Linux 8.1 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 8.2 Advanced Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8.2 Telecommunications Update ServiceNot specified—
Red HatRed Hat Enterprise Linux 8.2 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 8.4 Advanced Mission Critical Update SupportNot specified—
Red HatRed Hat Enterprise Linux 8.4 Telecommunications Update ServiceNot specified—
Red HatRed Hat Enterprise Linux 8.4 Update Services for SAP SolutionsNot specified—
Red HatRed Hat Enterprise Linux 8.6 Extended Update SupportNot specified—
Red HatRed Hat Enterprise Linux 9Not specified—
Red HatRed Hat Enterprise Linux 9.0 Extended Update SupportNot specified—

06 References

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

    A version is affected if any line below covers it.

    • Affected before 7:4.15-6.module_el8.8.0+3670+56cb3c8e.1.alma.1
    • Affected before 7:4.15-7.module_el8.9.0+3680+f9142978.1.alma.1

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

    A version is affected if any line below covers it.

    • Affected before 7:5.5-5.el9_2.1
    • Affected before 7:5.5-6.el9_3.1

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

    A version is affected if any line below covers it.

    • Affected before 7:4.15-6.module_el8.8.0+3670+56cb3c8e.1.alma.1
    • Affected before 7:4.15-7.module_el8.9.0+3680+f9142978.1.alma.1

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

    A version is affected if any line below covers it.

    • Affected before 7:5.5-5.el9_2.1
    • Affected before 7:5.5-6.el9_3.1

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+deb12u1

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 4.10-1ubuntu1.8

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 5.7-0ubuntu0.22.04.2

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
    Fixed in 3.5.12-1ubuntu7.16+esm2
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

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
    Fixed in 3.5.27-1ubuntu1.14+esm1
    Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro

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.