CVE-2024-25617 Denial of Service in HTTP Header parser in squid proxy

2024-02-1420:55:52

CWE-400

CWE-182

GitHub_M

www.cve.org

cve-2024-25617; denial of service; http header parser; squid proxy

5.3 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

LOW

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

6.9 Medium

AI Score

Confidence

High

0.0004 Low

EPSS

Percentile

15.6%

JSON

Squid is an open source caching proxy for the Web supporting HTTP, HTTPS, FTP, and more. Due to a Collapse of Data into Unsafe Value bug ,Squid may be vulnerable to a Denial of Service attack against HTTP header parsing. This problem allows a remote client or a remote server to perform Denial of Service when sending oversized headers in HTTP messages. In versions of Squid prior to 6.5 this can be achieved if the request_header_max_size or reply_header_max_size settings are unchanged from the default. In Squid version 6.5 and later, the default setting of these parameters is safe. Squid will emit a critical warning in cache.log if the administrator is setting these parameters to unsafe values. Squid will not at this time prevent these settings from being changed to unsafe values. Users are advised to upgrade to version 6.5. There are no known workarounds for this vulnerability. This issue is also tracked as SQUID-2024:2

CNA Affected

[
  {
    "vendor": "squid-cache",
    "product": "squid",
    "versions": [
      {
        "version": "< 6.5",
        "status": "affected"
      }
    ]
  }
]