CVE-2023-46847
Squid: denial of service in http digest authentication
HIGH
7.5
CVSS Score
Published: November 3, 2023 at 07:58 AM UTC
Updated: August 7, 2026 at 02:16 AM UTC
11 products affected across 2 vendorsEnterprise LinuxEnterprise Linux ServerEnterprise Linux Workstation
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Severity
HIGH7.5
Exploit prediction
EPSS 79%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
Vendor states this is fixed in 7:3.5.20-17.el7_9.9 (unaffected)
Vendor states this is fixed in 7:5.2-1.el9_0.3 (unaffected)
Vendor states this is fixed in 7:5.5-5.el9_2.1 (unaffected)
Vendor states this is fixed in 7:5.5-6.el9_3.1 (unaffected)
Vendor states this is fixed in 8020020231101135052.4cda2c84 (unaffected)
Vendor states this is fixed in 8040020231101101624.522a0ee4 (unaffected)
Vendor states this is fixed in 8060020231031165747.ad008a3a (unaffected)
Vendor states this is fixed in 8080020231030214932.63b34585 (unaffected)
Vendor states this is fixed in 8090020231030224841.a75119d5 (unaffected)
Enterprise Linux Server· Red Hatrubygems
95%95%
3.2.0.1 ≤ v < 6.4
Affected range stops below 6.4, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (19)
Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6266Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6267Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6268Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6748Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6801Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6803Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6804Vendor Advisoryx_refsource_REDHATThird Party Advisory
Source: [email protected]
https://access.redhat.com/errata/RHSA-2023:6805CVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- NONE
- Integrity
- NONE
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-120
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