Is CVE-2023-49288 in the CISA KEV catalog?

No. CVE-2023-49288 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-49288?

CVE-2023-49288 has a CVSS v3 base score of 8.6 (HIGH).

What is the EPSS score for CVE-2023-49288?

CVE-2023-49288 has an EPSS score of 4.78% (91th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-49288?

Upgrade squid on debian 13 to 6.1-1 or later. Fixes are available for 16 affected products.

CVE & CISA-KEV Catalog

CVE-2023-49288

HIGHEPSS 91th pctl

8.6

CVSS v3

NVD

Description

Squid is a caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Affected versions of squid are subject to a a Use-After-Free bug which can lead to a Denial of Service attack via collapsed forwarding. All versions of Squid from 3.5 up to and including 5.9 configured with "collapsed_forwarding on" are vulnerable. Configurations with "collapsed_forwarding off" or without a "collapsed_forwarding" directive are not vulnerable. This bug is fixed by Squid version 6.0.1. Users are advised to upgrade. Users unable to upgrade should remove all collapsed_forwarding lines from their squid.conf.

CWE-416Use After Free

How to fix

Remediation Available

squidDebian

Fixed in:6.1-1CVE-2023-49288

libecapRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.src::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

libecapRocky

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.src::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

libecap-debuginfoRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

libecap-debuginfoRocky

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

libecap-debugsourceRocky

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

libecap-debugsourceRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

libecap-develRed Hat / RHEL

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

libecap-develRocky

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.s390x::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.ppc64le::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.aarch64::squid:4RHSA-2023:7668

Fixed in:0:1.0.1-2.module+el8.9.0+19703+a1da7223.x86_64::squid:4RHSA-2023:7668

squidRocky

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.s390x::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.aarch64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.ppc64le::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.x86_64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.src::squid:4RHSA-2023:7668

Fixed in:7:5.5-6.el9_3.2RHSA-2023:7465

squidRed Hat / RHEL

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.ppc64le::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.aarch64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.x86_64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.s390x::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.src::squid:4RHSA-2023:7668

Fixed in:7:5.5-6.el9_3.2RHSA-2023:7465

squid-debuginfoRed Hat / RHEL

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.aarch64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.ppc64le::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.s390x::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.x86_64::squid:4RHSA-2023:7668

Fixed in:7:5.5-6.el9_3.2RHSA-2023:7465

squid-debuginfoRocky

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.aarch64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.ppc64le::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.s390x::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.x86_64::squid:4RHSA-2023:7668

Fixed in:7:5.5-6.el9_3.2RHSA-2023:7465

squid-debugsourceRocky

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.x86_64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.s390x::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.ppc64le::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.aarch64::squid:4RHSA-2023:7668

Fixed in:7:5.5-6.el9_3.2RHSA-2023:7465

squid-debugsourceRed Hat / RHEL

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.x86_64::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.s390x::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.ppc64le::squid:4RHSA-2023:7668

Fixed in:7:4.15-7.module+el8.9.0+20806+014d88aa.3.aarch64::squid:4RHSA-2023:7668

Fixed in:7:5.5-6.el9_3.2RHSA-2023:7465

squidUbuntu

Fixed in:4.10-1ubuntu1.10USN-6728-1

Fixed in:4.10-1ubuntu1.12USN-6728-3

Fixed in:5.7-0ubuntu0.22.04.4USN-6728-1

Fixed in:6.1-2ubuntu1.3USN-6728-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredNone

User InteractionNone

ScopeChanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

Exploit Intelligence

4.78%probability of exploitation in 30 days

91stpercentile

High risk: more likely to be exploited than 91% of all known CVEs.

References

Vendor Advisory1

github.com

Other references3

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.