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Vulnerability · Published Nov 3, 2023 · Assigned by redhat

CVE-2023-46847Squid: denial of service in http digest authentication

High 8.6

In plain English

A high-severity buffer overflow in squid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 78.5% (higher than 99.6% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 3.1)8.6High
Exploit odds (30 days)78.5%top 0.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Squid is vulnerable to a Denial of Service, where a remote attacker can perform buffer overflow attack by writing up to 2 MB of arbitrary data to heap memory when Squid is configured to accept HTTP Digest Authentication.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:6267
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:6267
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:7213
AlmaLinux:8libecap1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:7213
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:6267
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+2741+01592ae8ALSA-2023:7213
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:7213
AlmaLinux:8libecap-devel1.0.1-2.module_el8.6.0+3048+383bc947ALSA-2023:6267
AlmaLinux:8squid7:4.15-6.module_el8.8.0+3670+56cb3c8e.1.alma.1ALSA-2023:6267
AlmaLinux:8squid7:4.15-7.module_el8.9.0+3680+f9142978.1.alma.1ALSA-2023:7213
AlmaLinux:9squid7:5.5-5.el9_2.1ALSA-2023:6266
AlmaLinux:9squid7:5.5-6.el9_3.1ALSA-2023:6748
Alpine:v3.20squid6.4-r0ALPINE-CVE-2023-46847
Alpine:v3.21squid6.4-r0ALPINE-CVE-2023-46847
Alpine:v3.22squid6.4-r0ALPINE-CVE-2023-46847
Alpine:v3.23squid6.4-r0ALPINE-CVE-2023-46847
Alpine:v3.24squid6.4-r0ALPINE-CVE-2023-46847
Debian:12squid5.7-2+deb12u1DSA-5637-1
Debian:12squid5.7-2+deb12u1DEBIAN-CVE-2023-46847
Debian:13squid6.5-1DEBIAN-CVE-2023-46847
Debian:14squid6.5-1DEBIAN-CVE-2023-46847
Rocky Linux:8libecap0:1.0.1-2.module+el8.9.0+1437+df5ea8f0RLSA-2023:7213
Rocky Linux:8libecap0:1.0.1-2.module+el8.4.0+404+316a0dc5RLSA-2023:6267
Rocky Linux:8squid7:4.15-6.module+el8.8.0+1273+55f5b063RLSA-2023:6267
Rocky Linux:8squid7:4.15-7.module+el8.9.0+1568+6d4fd5d4.1RLSA-2023:7213
Rocky Linux:9squid7:5.5-5.el9_2.1RLSA-2023:6266
Ubuntu:22.04:LTSsquid5.7-0ubuntu0.22.04.2USN-6500-1
Ubuntu:22.04:LTSsquid5.7-0ubuntu0.22.04.2UBUNTU-CVE-2023-46847

Affected products (as reported)

VendorProductVersions
squid 3.2.0.1 – before 6.4
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 6 Extended Lifecycle Support see references
Red Hat Red Hat Enterprise Linux 7 see references
Red Hat Red Hat Enterprise Linux 7.6 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 7.7 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8 see references
Red Hat Red Hat Enterprise Linux 8.1 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.2 Advanced Update Support see references
Red Hat Red Hat Enterprise Linux 8.2 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support see references
Red Hat Red Hat Enterprise Linux 8.4 Telecommunications Update Service see references
Red Hat Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions see references
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9 see references
Red Hat Red Hat Enterprise Linux 9.0 Extended Update Support see references

Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

References