Envoy prior 1.23.12/1.24.10/1.25.9/1.26.4/1.27.0 HTTP/2 input validation

CVSS Meta Temp Score
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CTI Interest Score
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6.8$0-$5k0.00

Summaryinfo

A vulnerability was found in Envoy and classified as critical. The affected element is an unknown function of the component HTTP2 Handler. The manipulation results in input validation. This vulnerability was named CVE-2023-35944. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Envoy. It has been classified as critical. Affected is an unknown code of the component HTTP2 Handler. The manipulation with an unknown input leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Envoy is an open source edge and service proxy designed for cloud-native applications. Envoy allows mixed-case schemes in HTTP/2, however, some internal scheme checks are case-sensitive. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, this can lead to the rejection of requests with mixed-case schemes such as `htTp` or `htTps`, or the bypassing of some requests such as `https` in unencrypted connections. With a fix in versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, Envoy will now lowercase scheme values by default, and change the internal scheme checks that were case-sensitive to be case-insensitive. There are no known workarounds for this issue.

The weakness was presented 07/26/2023 as GHSA-pvgm-7jpg-pw5g. The advisory is shared for download at github.com. This vulnerability is traded as CVE-2023-35944 since 06/20/2023. There are neither technical details nor an exploit publicly available.

Upgrading to version 1.23.12, 1.24.10, 1.25.9, 1.26.4 or 1.27.0 eliminates this vulnerability.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CNA Base Score: 8.2
CNA Vector (GitHub, Inc.): 🔍

CVSSv2info

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

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Envoy 1.23.12/1.24.10/1.25.9/1.26.4/1.27.0

Timelineinfo

06/20/2023 🔍
07/26/2023 +36 days 🔍
07/26/2023 +0 days 🔍
08/18/2023 +23 days 🔍

Sourcesinfo

Advisory: GHSA-pvgm-7jpg-pw5g
Status: Confirmed

CVE: CVE-2023-35944 (🔍)
GCVE (CVE): GCVE-0-2023-35944
GCVE (VulDB): GCVE-100-235428

Entryinfo

Created: 07/26/2023 10:39
Updated: 08/18/2023 17:07
Changes: 07/26/2023 10:39 (48), 08/18/2023 17:07 (11)
Complete: 🔍
Cache ID: 216::103

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