Upstream information

CVE-2020-15811 at MITRE

Description

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.

SUSE information

Overall state of this security issue: Running

This issue is currently rated as having critical severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 4
Vector AV:N/AC:L/Au:S/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication Single
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 6.5 9.6
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:N
Access Vector Network Network
Access Complexity Low Low
Privileges Required Low Low
User Interaction None None
Scope Unchanged Changed
Confidentiality Impact None High
Integrity Impact High High
Availability Impact None None
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1175665 [NEW]

SUSE Security Advisories:

List of released packages

Product(s) Fixed package version(s) References
HPE Helion Openstack 8
  • squid >= 3.5.21-26.32.1
Patchnames:
HPE-Helion-OpenStack-8-2020-2471
SUSE Enterprise Storage 5
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-Storage-5-2020-2471
SUSE Linux Enterprise High Performance Computing 15-ESPOS
SUSE Linux Enterprise High Performance Computing 15-LTSS
  • squid >= 4.13-5.23.1
Patchnames:
SUSE-SLE-Product-HPC-15-2020-2442
SUSE Linux Enterprise Module for Server Applications 15 SP1
  • squid >= 4.13-5.23.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP1-2020-2442
SUSE Linux Enterprise Module for Server Applications 15 SP2
  • squid >= 4.13-5.23.1
Patchnames:
SUSE-SLE-Module-Server-Applications-15-SP2-2020-2442
SUSE Linux Enterprise Point of Sale 12 SP2-CLIENT
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-POS-12-SP2-CLIENT-2020-2471
SUSE Linux Enterprise Server 12 SP2-BCL
SUSE Linux Enterprise Server for SAP Applications 12 SP2-BCL
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-BCL-2020-2471
SUSE Linux Enterprise Server 12 SP2-ESPOS
SUSE Linux Enterprise Server for SAP Applications 12 SP2-ESPOS
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-ESPOS-2020-2471
SUSE Linux Enterprise Server 12 SP2-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP2-LTSS
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP2-2020-2471
SUSE Linux Enterprise Server 12 SP3-BCL
SUSE Linux Enterprise Server for SAP Applications 12 SP3-BCL
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-BCL-2020-2471
SUSE Linux Enterprise Server 12 SP3-ESPOS
SUSE Linux Enterprise Server for SAP Applications 12 SP3-ESPOS
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-ESPOS-2020-2471
SUSE Linux Enterprise Server 12 SP3-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP3-LTSS
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP3-2020-2471
SUSE Linux Enterprise Server 12 SP4-ESPOS
SUSE Linux Enterprise Server for SAP Applications 12 SP4-ESPOS
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-ESPOS-2020-2471
SUSE Linux Enterprise Server 12 SP4-LTSS
SUSE Linux Enterprise Server for SAP Applications 12 SP4-LTSS
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SERVER-12-SP4-LTSS-2020-2471
SUSE Linux Enterprise Server 12 SP5
SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • squid >= 4.13-4.15.1
Patchnames:
SUSE-SLE-SERVER-12-SP5-2020-2443
SUSE Linux Enterprise Server 15-LTSS
  • squid >= 4.13-5.23.1
Patchnames:
SUSE-SLE-Product-SLES-15-2020-2442
SUSE Linux Enterprise Server for SAP Applications 12 SP2
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SAP-12-SP2-2020-2471
SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SAP-12-SP3-2020-2471
SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-SLE-SAP-12-SP4-2020-2471
SUSE Linux Enterprise Server for SAP Applications 15
  • squid >= 4.13-5.23.1
Patchnames:
SUSE-SLE-Product-SLES_SAP-15-2020-2442
SUSE OpenStack Cloud 7
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-OpenStack-Cloud-7-2020-2471
SUSE OpenStack Cloud 8
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-OpenStack-Cloud-8-2020-2471
SUSE OpenStack Cloud 9
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-OpenStack-Cloud-9-2020-2471
SUSE OpenStack Cloud Crowbar 8
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-8-2020-2471
SUSE OpenStack Cloud Crowbar 9
  • squid >= 3.5.21-26.32.1
Patchnames:
SUSE-OpenStack-Cloud-Crowbar-9-2020-2471
openSUSE Leap 15.1
  • squid >= 4.13-lp151.2.24.1
  • squid-debuginfo >= 4.13-lp151.2.24.1
  • squid-debugsource >= 4.13-lp151.2.24.1
Patchnames:
openSUSE-2020-1346
openSUSE Leap 15.2
  • squid >= 4.13-lp152.2.6.1
  • squid-debuginfo >= 4.13-lp152.2.6.1
  • squid-debugsource >= 4.13-lp152.2.6.1
Patchnames:
openSUSE-2020-1369


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE Linux Enterprise 15-SP1 Module for Server Applications squid Released
SUSE Linux Enterprise 15-SP2 Module for Server Applications squid Released
SUSE Linux Enterprise High Performance Computing 12 SP4 squid Affected
SUSE Linux Enterprise High Performance Computing 12 SP5 squid Released
SUSE Linux Enterprise High Performance Computing 15 LTSS squid Released
SUSE Linux Enterprise Server 11 SP1 squid Affected
SUSE Linux Enterprise Server 11 SP3 squid Affected
SUSE Linux Enterprise Server 11 SP4 LTSS squid Affected
SUSE Linux Enterprise Server 12 SP2 BCL squid Released
SUSE Linux Enterprise Server 12 SP2 LTSS squid Released
SUSE Linux Enterprise Server 12 SP3 BCL squid Released
SUSE Linux Enterprise Server 12 SP3 LTSS squid Released
SUSE Linux Enterprise Server 12 SP4 LTSS squid Released
SUSE Linux Enterprise Server 12 SP5 squid Released
SUSE Linux Enterprise Server 15 LTSS squid Released
SUSE Linux Enterprise Server ESPOS 15 squid Released
SUSE Linux Enterprise Server for SAP Applications 12 SP2 squid Released
SUSE Linux Enterprise Server for SAP Applications 12 SP3 squid Released
SUSE Linux Enterprise Server for SAP Applications 12 SP4 squid Released
SUSE Linux Enterprise Server for SAP Applications 12 SP5 squid Released