CVE-2023-46847
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.
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 78.5%, higher than 100% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 78.51% probability · 100th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120
- Affected
- squid-cache/squid · redhat/enterprise linux · redhat/enterprise linux eus · redhat/enterprise linux for arm 64 · redhat/enterprise linux for ibm z systems · redhat/enterprise linux for power little endian · redhat/enterprise linux server · redhat/enterprise linux server aus · redhat/enterprise linux server tus · redhat/enterprise linux workstation
- Source
- secalert@redhat.com
EPSS moved from 78.5% on 19 October 2026 to 78.5% on 3 November 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- https://access.redhat.com/errata/RHSA-2023:6266Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6267Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6268Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6748Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6801Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6803Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6804Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6805Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6810Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6882Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6884Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7213Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7576Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7578Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2023-46847Third Party Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2245916Issue Tracking, Third Party Advisory
- https://github.com/squid-cache/squid/security/advisories/GHSA-phqj-m8gv-cq4gVendor Advisory
- https://access.redhat.com/errata/RHSA-2023:6266Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6267Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6268Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6748Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6801Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6803Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6804Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6805Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6810Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6882Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:6884Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7213Third Party Advisory
- https://access.redhat.com/errata/RHSA-2023:7576Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.