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Fencer Vulns
high 8.6

CVE-2024-25111 in the critical feed json

SQUID-2024:1 Denial of Service in HTTP Chunked Decoding

published 2024-03-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-22472

cvss
8.6
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
65.3%
EPSS 65.3% chance of exploitation in 30 days, percentile 99.2%
public exploits
0
none known

Summary

Squid is a web proxy cache. Starting in version 3.5.27 and prior to version 6.8, Squid may be vulnerable to a Denial of Service attack against HTTP Chunked decoder due to an uncontrolled recursion bug. This problem allows a remote attacker to cause Denial of Service when sending a crafted, chunked, encoded HTTP Message. This bug is fixed in Squid version 6.8. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives. There is no workaround for this issue.

Patch / fix

  • squid-cache squid 6.8
  • squid Debian 12 5.7-2+deb12u1
  • squid Debian 14, Debian 13 6.8-1

debian advisories DEBIAN-CVE-2024-25111

  • squid Ubuntu 20.04 LTS 4.10-1ubuntu1.10
  • squid Ubuntu 22.04 LTS 5.7-0ubuntu0.22.04.4
  • squid Ubuntu 24.04 LTS 6.6-1ubuntu4

ubuntu advisories UBUNTU-CVE-2024-25111

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • squid RHEL 9 7:5.5-6.el9_3.8
  • squid RHEL 8 7:4.15-7.module+el8.9.0+21530+59b09a5b.10
  • libecap RHEL 8 1.0.1-2.module+el8.9.0+19703+a1da7223
  • squid RHEL 8.2 TUS, RHEL 8.2 E4S, RHEL 8.2 AUS 7:4.4-8.module+el8.2.0+21527+aa63d5ff.9
  • libecap RHEL 8.8 EUS, RHEL 8.6 EUS, RHEL 8.4 TUS +5 more 1.0.1-2.module+el8.1.0+4044+36416a77
  • squid RHEL 9.0 EUS 7:5.2-1.el9_0.6
  • squid RHEL 8.4 TUS, RHEL 8.4 E4S, RHEL 8.4 AUS 7:4.11-4.module+el8.4.0+21523+3cc98f8b.8
  • squid RHEL 9.2 EUS 7:5.5-5.el9_2.6

red hat advisories RHSA-2024:2777RHSA-2024:1833RHSA-2024:1832RHSA-2024:1376RHSA-2024:1515RHSA-2024:1375

  • squid SLES for SAP 12 SP5, SLES 12 SP5 4.17-4.44.1
  • squid SLES for SAP 15 SP3, SLES for SAP 15 SP2, SLES 15 SP3-LTSS +4 more 4.17-150000.5.52.1
  • squid SLES for SAP 15 SP4, SLES 15 SP4-LTSS, SLE Module for Server Applications 15 SP5 +5 more 5.7-150400.3.26.1

suse advisories SUSE-SU-2024:1115-1SUSE-SU-2024:1114-1SUSE-SU-2024:1113-1

  • squid openSUSE Tumbleweed 6.8-1.1

opensuse advisories openSUSE-SU-2024:13757-1

  • squid AlmaLinux 8 7:4.15-7.module_el8.9.0+3749+dbf371ed.10
  • 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
  • squid AlmaLinux 9 7:5.5-6.el9_3.8

almalinux advisories ALSA-2024:1375ALSA-2024:1376

  • libecap Rocky Linux 8 1.0.1-2.module+el8.9.0+1437+df5ea8f0

rocky linux advisories RLSA-2024:1375

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-2024-25111 updated cvss 8.6

squid: Denial of Service in HTTP Chunked Decoding

  • Red Hat Enterprise Linux AppStream (v. 8) libecap 1.0.1-2.module+el8.9.0+19703+a1da7223, squid 4.15-7.module+el8.9.0+21530+59b09a5b.10
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1375
  • Red Hat Enterprise Linux AppStream (v. 9) squid 5.5-6.el9_3.8
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1376
  • Red Hat Enterprise Linux AppStream AUS (v. 8.2) squid 4.4-8.module+el8.2.0+21527+aa63d5ff.9, libecap 1.0.1-2.module+el8.1.0+4044+36416a77
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:2777
  • 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+21523+3cc98f8b.8
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1832
  • Red Hat Enterprise Linux AppStream E4S (v. 8.2) squid 4.4-8.module+el8.2.0+21527+aa63d5ff.9, libecap 1.0.1-2.module+el8.1.0+4044+36416a77
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:2777
  • 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+21523+3cc98f8b.8
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1832
  • Red Hat Enterprise Linux AppStream EUS (v.8.6) libecap 1.0.1-2.module+el8.1.0+4044+36416a77, squid 4.15-3.module+el8.6.0+21519+58cab4c1.6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1479
  • 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+21509+962c493b.6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:2822
show 5 more
  • Red Hat Enterprise Linux AppStream EUS (v.9.0) squid 5.2-1.el9_0.6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1833
  • Red Hat Enterprise Linux AppStream EUS (v.9.2) squid 5.5-5.el9_2.6
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1515
  • Red Hat Enterprise Linux AppStream TUS (v. 8.2) squid 4.4-8.module+el8.2.0+21527+aa63d5ff.9, libecap 1.0.1-2.module+el8.1.0+4044+36416a77
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:2777
  • 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+21523+3cc98f8b.8
    fixed: vendor fix “Red Hat has investigated whether a possible mitigation exists for this issue, and has not been able to identify a practical example. Please update the affected package as soon as possible.” RHSA-2024:1832
  • Red Hat Enterprise Linux 6 squid, squid34 Red Hat Enterprise Linux 7 squid, squid-sysvinit, squid-migration-script
    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
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
2 y ago

Exploit prediction

65.25% chance of exploitation in the next 30 days, higher than 99.2% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/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
  • netapp bluexp
  • fedoraproject fedora

Classification

Weakness

References

Sources

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.