Upstream information

CVE-2016-6581 at MITRE

Description

A HTTP/2 implementation built using any version of the Python HPACK library between v1.0.0 and v2.2.0 could be targeted for a denial of service attack, specifically a so-called "HPACK Bomb" attack. This attack occurs when an attacker inserts a header field that is exactly the size of the HPACK dynamic header table into the dynamic header table. The attacker can then send a header block that is simply repeated requests to expand that field in the dynamic table. This can lead to a gigantic compression ratio of 4,096 or better, meaning that 16kB of data can decompress to 64MB of data on the target machine.

SUSE information

Overall state of this security issue: Resolved

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 7.8
Vector AV:N/AC:L/Au:N/C:N/I:N/A:C
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact None
Availability Impact Complete
CVSS v3 Scores
  National Vulnerability Database
Base Score 7.5
Vector CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3
No SUSE Bugzilla entries cross referenced.

No SUSE Security Announcements cross referenced.

List of released packages

Product(s) Fixed package version(s) References
SUSE Enterprise Storage 7.1
SUSE Linux Enterprise High Performance Computing 15 SP3
SUSE Linux Enterprise Module for Server Applications 15 SP3
SUSE Linux Enterprise Server 15 SP3
SUSE Linux Enterprise Server for SAP Applications 15 SP3
SUSE Manager Proxy 4.2
SUSE Manager Retail Branch Server 4.2
SUSE Manager Server 4.2
  • python3-hpack >= 3.0.0-3.2.1
 Patchnames:
SUSE Linux Enterprise Module for Server Applications 15 SP3 GA python3-hpack-3.0.0-3.2.1
SUSE Linux Enterprise Desktop 15 SP6
SUSE Linux Enterprise High Performance Computing 15 SP6
SUSE Linux Enterprise Module for Python 3 15 SP6
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • python311-hpack >= 4.0.0-150400.8.3.9
 Patchnames:
SUSE Linux Enterprise Module for Python 3 15 SP6 GA python311-hpack-4.0.0-150400.8.3.9
SUSE Linux Enterprise High Performance Computing 15 SP4
SUSE Linux Enterprise Module for Server Applications 15 SP4
SUSE Linux Enterprise Server 15 SP4
SUSE Linux Enterprise Server for SAP Applications 15 SP4
SUSE Manager Proxy 4.3
SUSE Manager Retail Branch Server 4.3
SUSE Manager Server 4.3
  • python3-hpack >= 3.0.0-3.2.1
 Patchnames:
SUSE Linux Enterprise Module for Server Applications 15 SP4 GA python3-hpack-3.0.0-3.2.1
openSUSE Tumbleweed
  • python310-hpack >= 4.0.0-2.7
  • python311-hpack >= 4.0.0-2.7
  • python312-hpack >= 4.0.0-2.7
  • python36-hpack >= 4.0.0-1.6
  • python38-hpack >= 4.0.0-1.6
  • python39-hpack >= 4.0.0-1.6
 Patchnames:
openSUSE-Tumbleweed-2024-11230
openSUSE-Tumbleweed-2024-14140

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. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP5 python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP6 python-hpack Already fixed
SUSE Linux Enterprise Module for Server Applications 15 SP5 python-hpack Already fixed
SUSE Linux Enterprise Module for Server Applications 15 SP6 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP5 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP5-LTSS python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP6 python-hpack Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP5 python-hpack Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP6 python-hpack Already fixed
SUSE Manager Proxy 4.3 python-hpack Already fixed
SUSE Manager Retail Branch Server 4.3 python-hpack Already fixed
SUSE Manager Server 4.3 python-hpack Already fixed
openSUSE Leap 15.5 python-hpack Already fixed
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP2 python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP3 python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP4 python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS python-hpack Already fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS python-hpack Already fixed
SUSE Linux Enterprise Module for Server Applications 15 SP2 python-hpack Already fixed
SUSE Linux Enterprise Module for Server Applications 15 SP3 python-hpack Already fixed
SUSE Linux Enterprise Module for Server Applications 15 SP4 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP2 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP2-LTSS python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP3 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP3-LTSS python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP4 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP4-LTSS python-hpack Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP2 python-hpack Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP3 python-hpack Already fixed
SUSE Linux Enterprise Server for SAP Applications 15 SP4 python-hpack Already fixed
Products past their end of life and not receiving proactive updates anymore.
SUSE Enterprise Storage 7 python-hpack Already fixed
SUSE Enterprise Storage 7.1 python-hpack Already fixed
SUSE Linux Enterprise Real Time 15 SP2 python-hpack Already fixed
SUSE Linux Enterprise Real Time 15 SP3 python-hpack Already fixed
SUSE Linux Enterprise Real Time 15 SP4 python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP2-BCL python-hpack Already fixed
SUSE Linux Enterprise Server 15 SP3-BCL python-hpack Already fixed
SUSE Manager Proxy 4.1 python-hpack Already fixed
SUSE Manager Proxy 4.2 python-hpack Already fixed
SUSE Manager Retail Branch Server 4.1 python-hpack Already fixed
SUSE Manager Retail Branch Server 4.2 python-hpack Already fixed
SUSE Manager Server 4.1 python-hpack Already fixed
SUSE Manager Server 4.2 python-hpack Already fixed
openSUSE Leap 15.3 python-hpack Already fixed
openSUSE Leap 15.4 python-hpack Already fixed

SUSE Timeline for this CVE

CVE page created: Thu Aug 4 12:15:16 2016
CVE page last modified: Fri Dec 20 21:57:26 2024