Envoy prior 1.23.12/1.24.10/1.25.9/1.26.4/1.27.0 Header origin use after free

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability has been found in Envoy and classified as problematic. Impacted is an unknown function of the component Header Handler. The manipulation of the argument origin leads to use after free. This vulnerability is uniquely identified as CVE-2023-35943. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Envoy and classified as problematic. This issue affects an unknown part of the component Header Handler. The manipulation of the argument origin with an unknown input leads to a use after free vulnerability. Using CWE to declare the problem leads to CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Envoy is an open source edge and service proxy designed for cloud-native applications. Prior to versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12, the CORS filter will segfault and crash Envoy when the `origin` header is removed and deleted between `decodeHeaders`and `encodeHeaders`. Versions 1.27.0, 1.26.4, 1.25.9, 1.24.10, and 1.23.12 have a fix for this issue. As a workaround, do not remove the `origin` header in the Envoy configuration.

The weakness was disclosed 07/26/2023 as GHSA-mc6h-6j9x-v3gq. It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2023-35943 since 06/20/2023. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

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

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

Productinfo

Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 6.3
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: Use after free
CWE: CWE-416 / CWE-119
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-mc6h-6j9x-v3gq
Status: Confirmed

CVE: CVE-2023-35943 (🔍)
GCVE (CVE): GCVE-0-2023-35943
GCVE (VulDB): GCVE-100-235427

Entryinfo

Created: 07/26/2023 10:38
Updated: 08/18/2023 16:59
Changes: 07/26/2023 10:38 (49), 08/18/2023 16:59 (11)
Complete: 🔍
Cache ID: 216::103

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

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