CVE-2023-46724 SQUID-2023:4 Denial of Service in SSL Certificate validation

2023-11-0119:09:34

CWE-823

CWE-786

CWE-129

CWE-1285

CWE-125

GitHub_M

www.cve.org

squid

denial of service

ssl certificate

8.6 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H

8.6 High

AI Score

Confidence

High

0.006 Low

EPSS

Percentile

78.7%

JSON

Squid is a caching proxy for the Web. Due to an Improper Validation of Specified Index bug, Squid versions 3.3.0.1 through 5.9 and 6.0 prior to 6.4 compiled using --with-openssl are vulnerable to a Denial of Service attack against SSL Certificate validation. This problem allows a remote server to perform Denial of Service against Squid Proxy by initiating a TLS Handshake with a specially crafted SSL Certificate in a server certificate chain. This attack is limited to HTTPS and SSL-Bump. This bug is fixed in Squid version 6.4. In addition, patches addressing this problem for the stable releases can be found in Squid’s patch archives. Those who you use a prepackaged version of Squid should refer to the package vendor for availability information on updated packages.

CNA Affected

[
  {
    "vendor": "squid-cache",
    "product": "squid",
    "versions": [
      {
        "version": ">= 3.3.0.1, < 6.4",
        "status": "affected"
      }
    ]
  }
]