CVE catalog

CVE-2018-1172

squid: CVE-2018-1172

[CVE catalog]

Severity
High · CVSS 7.5CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
Source
[NVD] · [CVE record]
EPSS
8.16% · Oct 25, 2026

This vulnerability allows remote attackers to deny service on vulnerable installations of The Squid Software Foundation Squid 3.5.27-20180318. Authentication is not required to exploit this vulnerability. The specific flaw exists within ClientRequestContext::sslBumpAccessCheck(). A crafted request can trigger the dereference of a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition to users of the system. Was ZDI-CAN-6088.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiansquidsid7.7-1fixed
Debiansquidforky7.7-1fixed
Debiansquidtrixie6.13-2+deb13u3fixed
Debiansquidtrixie-security6.13-2+deb13u2fixed
Debiansquidbookworm5.7-2+deb12u5fixed
Debiansquidbookworm-security5.7-2+deb12u6fixed
Alpinesquid3.103.5.27-r2fixed
Alpinesquid3.113.5.27-r2fixed
Alpinesquid3.123.5.27-r2fixed
Alpinesquid3.133.5.27-r2fixed
Alpinesquid3.143.5.27-r2fixed
Alpinesquid3.153.5.27-r2fixed
Alpinesquid3.163.5.27-r2fixed
Alpinesquid3.173.5.27-r2fixed
Alpinesquid3.183.5.27-r2fixed
Alpinesquid3.193.5.27-r2fixed
Alpinesquid3.203.5.27-r2fixed
Alpinesquid3.213.5.27-r2fixed
Alpinesquid3.223.5.27-r2fixed
Alpinesquid3.233.5.27-r2fixed
Alpinesquid3.243.5.27-r2fixed
Alpinesquid3.83.5.27-r2fixed
Alpinesquid3.93.5.27-r2fixed
Susesquidlinux enterprise server 12 sp33.5.21-26.9.1fixed
Susesquidlinux enterprise server for sap applications 12 sp33.5.21-26.9.1fixed
Susesquid3linux enterprise server 11 sp43.1.23-8.16.37.6.1fixed
Susesquid3linux enterprise server for sap applications 11 sp43.1.23-8.16.37.6.1fixed

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiansquidsourcesid4.1-1unimportantNot reportedNot reported
Debiansquidsourceforky4.1-1unimportantNot reportedNot reported
Debiansquidsourcetrixie4.1-1unimportantNot reportedNot reported
Debiansquidsourcebookworm4.1-1unimportantNot reportedNot reported
Alpinesquidapk3.103.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.113.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.123.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.133.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.143.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.153.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.163.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.173.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.183.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.193.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.203.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.213.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.223.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.233.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.243.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.83.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Alpinesquidapk3.93.5.27-r2Not reportedALPINE-CVE-2018-1172Not reported
Susesquidrpmlinux enterprise server 12 sp33.5.21-26.9.1Not reportedSUSE-SU-2018:1122-1Not reported
Susesquidrpmlinux enterprise server for sap applications 12 sp33.5.21-26.9.1Not reportedSUSE-SU-2018:1122-1Not reported
Susesquid3rpmlinux enterprise server 11 sp43.1.23-8.16.37.6.1Not reportedSUSE-SU-2018:1365-1Not reported
Susesquid3rpmlinux enterprise server for sap applications 11 sp43.1.23-8.16.37.6.1Not reportedSUSE-SU-2018:1365-1Not reported

OpenFactory catalog packages

Matching against OpenFactory catalog package versions is in progress.

[Debian 12 (Bookworm)]

  • [squid]Unknown
    Details (4)

    • 5.7-2+deb12u5 · amd64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u5 · arm64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · amd64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · arm64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

  • [squid-cgi]Unknown

    Source package: [squid]

    Details (4)

    • 5.7-2+deb12u5 · amd64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u5 · arm64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · amd64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · arm64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

  • [squidclient]Unknown

    Source package: [squid]

    Details (4)

    • 5.7-2+deb12u5 · amd64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u5 · arm64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · amd64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · arm64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

  • [squid-common]Unknown

    Source package: [squid]

    Details (4)

    • 5.7-2+deb12u5 · all · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u5 · all · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · all · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · all · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

  • [squid-openssl]Unknown

    Source package: [squid]

    Details (4)

    • 5.7-2+deb12u5 · amd64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u5 · arm64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · amd64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · arm64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

  • [squid-purge]Unknown

    Source package: [squid]

    Details (4)

    • 5.7-2+deb12u5 · amd64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u5 · arm64 · bookworm

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · amd64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

    • 5.7-2+deb12u6 · arm64 · bookworm-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · bookworm; dsa · squid · debian · 12

[Debian 13 (Trixie)]

  • [squid]Unknown
    Details (4)

    • 6.13-2+deb13u2 · amd64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · amd64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

  • [squid-cgi]Unknown

    Source package: [squid]

    Details (4)

    • 6.13-2+deb13u2 · amd64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · amd64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

  • [squidclient]Unknown

    Source package: [squid]

    Details (4)

    • 6.13-2+deb13u2 · amd64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · amd64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

  • [squid-common]Unknown

    Source package: [squid]

    Details (4)

    • 6.13-2+deb13u2 · all · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · all · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · all · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · all · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

  • [squid-openssl]Unknown

    Source package: [squid]

    Details (4)

    • 6.13-2+deb13u2 · amd64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · amd64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

  • [squid-purge]Unknown

    Source package: [squid]

    Details (4)

    • 6.13-2+deb13u2 · amd64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · amd64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

    • 6.13-2+deb13u2 · arm64 · trixie-security

      Fixed · Fixed: 4.1-1

      dsa · squid · debian · 13

Observed:

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]