CVE-2024-25617

Denial of Service in HTTP Header parser in squid proxy

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

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 1.88% Top 20%
Vendor Advisory github.com Vendor Advisory github.com Vendor Advisory netapp.com
Affected: squid-cache squid
Published at:
Updated at:

References

Link Tags
https://github.com/squid-cache/squid/security/advisories/GHSA-h5x6-w8mv-xfpr mitigation third party advisory vendor advisory
https://github.com/squid-cache/squid/commit/72a3bbd5e431597c3fdb56d752bc56b010ba3817 patch vendor advisory
https://security.netapp.com/advisory/ntap-20240322-0006/ third party advisory patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2024-25617?
CVE-2024-25617 has been scored as a medium severity vulnerability.
How to fix CVE-2024-25617?
To fix CVE-2024-25617, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2024-25617 being actively exploited in the wild?
It is possible that CVE-2024-25617 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2024-25617?
CVE-2024-25617 affects squid-cache squid.
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