HTTP: Squid Proxy HTTP Header Parser Denial of Service
This signature detects attempts to exploit a known vulnerability against Squid Proxy. A successful attack can lead to a buffer overflow and arbitrary remote code execution within the context of the Squid Proxy.
Extended Description
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
Affected Products
Netapp bluexp
Short Name
HTTP:DOS:SQUID-PROXY-HTTP-DOS
Severity
Major
Recommended
False
Recommended Action
None
Category
HTTP
Keywords
CVE-2024-25111 CVE-2024-25617 Denial HTTP Header Parser Proxy Service Squid of
Release Date
05/08/2024
Supported Platforms
srx-branch-19.3
vsrx3bsd-19.2
srx-19.4
vsrx3bsd-19.4
srx-branch-19.4
vsrx-19.4
vsrx-19.2
srx-19.3
Sigpack Version
3773
False Positive
Unknown
Vendors
Netapp
Squid-cache