SB2023090612 - Multiple vulnerabilities in Squid

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Main Vulnerability Database SB2023090612

SB2023090612 - Multiple vulnerabilities in Squid

Published: September 6, 2023 Updated: December 3, 2023

Security Bulletin ID SB2023090612
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 3
Exploitation vector Remote access
Highest impact Denial of service

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 3 vulnerabilities.


1) Buffer overflow (CVE-ID: CVE-2023-46724)

CWE-ID: CWE-120 - Buffer overflow

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


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary error when handling gopher responses. A remote attacker can trick the victim into connecting to a malicious gopher server, trigger a buffer overflow and crash the proxy server.


2) NULL pointer dereference (CVE-ID: CVE-2023-46728)

CWE-ID: CWE-476 - NULL Pointer Dereference

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


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error in Gopher gateway. A remote attacker can pass specially crafted data to the server and perform a denial of service (DoS) attack.


3) Use-after-free (CVE-ID: CVE-2023-49288)

CWE-ID: CWE-416 - Use After Free

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


The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a use-after-free error in HTTP collapsed forwarding. A remote attacker can send specially crafted data to the server and crash the proxy server.


Remediation

Install update from vendor's website.

References