high 7.5

CVE-2024-45802 in the critical feed json

Squid Denial of Service

published 2024-10-28 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-41609

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 47.9%; EPSS 47.9% chance of exploitation in 30 days, percentile 98%
public exploits: 0; none known

Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to Input Validation, Premature Release of Resource During Expected Lifetime, and Missing Release of Resource after Effective Lifetime bugs, Squid is vulnerable to Denial of Service attacks by a trusted server against all clients using the proxy. This bug is fixed in the default build configuration of Squid version 6.10.

Patch / fix

fixed in 1 distros 5

squid-cache squid 6.10

debian red hat opensuse almalinux rocky linux

squid Debian 12 5.7-2+deb12u5
squid Debian 14, Debian 13 6.12-1

debian advisories DEBIAN-CVE-2024-45802

squid RHEL 9 7:5.5-14.el9_5.3
squid RHEL 8 7:4.15-10.module+el8.10.0+22489+b920747d.3
libecap RHEL 8 1.0.1-2.module+el8.9.0+19703+a1da7223
squid RHEL 8.6 TUS, RHEL 8.6 E4S, RHEL 8.6 AUS 7:4.15-3.module+el8.6.0+22491+132fca59.7
libecap RHEL 8.8 EUS, RHEL 8.6 TUS, RHEL 8.6 E4S +5 more 1.0.1-2.module+el8.1.0+4044+36416a77
squid RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 7:4.11-4.module+el8.4.0+22483+0c92772a.9
squid RHEL 8.8 EUS 7:4.15-6.module+el8.8.0+22494+5019dde6.7
squid RHEL 7 ELS 7:3.5.20-17.el7_9.11

red hat advisories RHSA-2024:9814 RHSA-2024:9815 RHSA-2024:9813 RHSA-2024:9738 RHSA-2024:9625 RHSA-2024:9678

squid openSUSE Tumbleweed 6.12-1.1

opensuse advisories openSUSE-SU-2024:14566-1

squid AlmaLinux 9 7:5.5-14.el9_5.3
squid AlmaLinux 8 7:4.15-10.module_el8.10.0+3916+ed00a4a0.3
libecap AlmaLinux 8 1.0.1-2.module_el8.6.0+2741+01592ae8
libecap AlmaLinux 8 1.0.1-2.module_el8.6.0+3048+383bc947

almalinux advisories ALSA-2024:9625 ALSA-2024:9644

squid Rocky Linux 9 7:5.5-14.el9_5.3
squid Rocky Linux 8 7:4.15-10.module+el8.10.0+1758+80ba9f4b
libecap Rocky Linux 8 1.0.1-2.module+el8.9.0+1437+df5ea8f0

rocky linux advisories RLSA-2024:9625 RLSA-2024:9644

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2024-45802 updated 2026-11-04 cvss 7.5

squid: Squid: Denial of Service via crafted ESI response content

Red Hat Enterprise Linux 6 squid, squid34
affected: workaround, no fix planned “Out of support scope”
Red Hat Enterprise Linux AppStream (v. 8) libecap 1.0.1-2.module+el8.9.0+19703+a1da7223, squid 4.15-10.module+el8.10.0+22489+b920747d.3
fixed: vendor fix RHSA-2024:9644
Red Hat Enterprise Linux AppStream (v. 9) squid 5.5-14.el9_5.3
fixed: vendor fix RHSA-2024:9625
Red Hat Enterprise Linux AppStream AUS (v. 8.2) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.4-8.module+el8.2.0+22482+3b9510d6.10
fixed: vendor fix RHSA-2024:9624
Red Hat Enterprise Linux AppStream AUS (v.8.4) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.11-4.module+el8.4.0+22483+0c92772a.9
fixed: vendor fix RHSA-2024:9815
Red Hat Enterprise Linux AppStream AUS (v.8.6) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.15-3.module+el8.6.0+22491+132fca59.7
fixed: vendor fix RHSA-2024:9814
Red Hat Enterprise Linux AppStream E4S (v.8.4) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.11-4.module+el8.4.0+22483+0c92772a.9
fixed: vendor fix RHSA-2024:9815
Red Hat Enterprise Linux AppStream E4S (v.8.6) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.15-3.module+el8.6.0+22491+132fca59.7
fixed: vendor fix RHSA-2024:9814

show 8 more

Red Hat Enterprise Linux AppStream E4S (v.9.0) squid 5.2-1.el9_0.7
fixed: vendor fix RHSA-2024:9729
Red Hat Enterprise Linux AppStream EUS (v.8.8) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.15-6.module+el8.8.0+22494+5019dde6.7
fixed: vendor fix RHSA-2024:9813
Red Hat Enterprise Linux AppStream EUS (v.9.2) squid 5.5-5.el9_2.8
fixed: vendor fix RHSA-2024:9677
Red Hat Enterprise Linux AppStream EUS (v.9.4) squid 5.5-13.el9_4.2
fixed: vendor fix RHSA-2024:9678
Red Hat Enterprise Linux AppStream TUS (v.8.4) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.11-4.module+el8.4.0+22483+0c92772a.9
fixed: vendor fix RHSA-2024:9815
Red Hat Enterprise Linux AppStream TUS (v.8.6) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.15-3.module+el8.6.0+22491+132fca59.7
fixed: vendor fix RHSA-2024:9814
Red Hat Enterprise Linux Server (v. 7 ELS) squid 3.5.20-17.el7_9.11, squid-migration-script 3.5.20-17.el7_9.11 Red Hat Enterprise Linux Server Optional (v. 7 ELS) squid-sysvinit 3.5.20-17.el7_9.11
fixed: vendor fix RHSA-2024:9738
Red Hat Enterprise Linux 10 squid
not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: none
Automatable: yes
Technical impact: partial
Assessed: 2 y ago (2024-10-28)

Exploit prediction

47.88% chance of exploitation in the next 30 days, higher than 98% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected products

squid-cache squid

Classification

Weakness

CWE-20 Improper Input Validation

References

github.com /squid-cache/squid/security/advisories/GHSA-f975-v7qw-q7hj
mitigation, third-party-advisory
security.netapp.com /advisory/ntap-20250103-0004/
lists.debian.org /debian-lts-announce/2025/03/msg00009.html

Sources

CVE List CVE-2024-45802
NVD CVE-2024-45802

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary