SB2023072633 - Multiple vulnerabilities in Envoy

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Main Vulnerability Database SB2023072633

SB2023072633 - Multiple vulnerabilities in Envoy

Published: July 26, 2023

Security Bulletin ID SB2023072633
CSH Severity
High
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

High 50% Medium 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Improper Encoding or Escaping of Output (CVE-ID: CVE-2023-35941)

CWE-ID: CWE-116 - Improper Encoding or Escaping of Output

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Amber


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to improper encoding or escaping of output. A remote attacker can construct credentials with permanent validity.


2) Use-after-free (CVE-ID: CVE-2023-35942)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the gRPC access logger extension. A remote user can perform a denial of service (DoS) attack.


3) Use-after-free (CVE-ID: CVE-2023-35943)

CWE-ID: CWE-416 - Use After Free

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/U:Green


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the HTTP CORS filter. A remote user can perform a denial of service (DoS) attack.


4) Input validation error (CVE-ID: CVE-2023-35944)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Amber


The vulnerability allows a remote attacker to compromise the target system.

The vulnerability exists due to incorrect handling of requests and responses with mixed case schemes. A remote attacker can pass specially crafted input to the application and bypass some requests with mixed schemes.


Remediation

Install update from vendor's website.

References