Traefik up to 2.8.7/2.9.0-rc4 HTTP/2 Connection resource consumption

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in Traefik up to 2.8.7/2.9.0-rc4. This affects an unknown part of the component HTTP2 Connection Handler. The manipulation leads to resource consumption. This vulnerability is listed as CVE-2022-39271. The attack may be initiated remotely. There is no available exploit. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Traefik up to 2.8.7/2.9.0-rc4 and classified as problematic. This issue affects some unknown functionality of the component HTTP2 Connection Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is availability. The summary by CVE is:

Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.

The weakness was presented 10/11/2022 as GHSA-c6hx-pjc3-7fqr. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2022-39271 since 09/02/2022. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

Upgrading to version 2.8.8 or 2.9.0-rc5 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component.

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Name

Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Upgrade: Traefik 2.8.8/2.9.0-rc5

Timelineinfo

09/02/2022 🔍
10/11/2022 +39 days 🔍
10/11/2022 +0 days 🔍
10/11/2022 +0 days 🔍

Sourcesinfo

Product: github.com

Advisory: GHSA-c6hx-pjc3-7fqr
Status: Confirmed

CVE: CVE-2022-39271 (🔍)
GCVE (CVE): GCVE-0-2022-39271
GCVE (VulDB): GCVE-100-210443

Entryinfo

Created: 10/11/2022 19:45
Changes: 10/11/2022 19:45 (51)
Complete: 🔍
Cache ID: 216::103

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