CVE-2023-46848
Published: 03 November 2023
Summary
CVE-2023-46848 is a high-severity Incorrect Conversion between Numeric Types (CWE-681) vulnerability in Squid-Cache Squid. Its CVSS base score is 8.6 (High).
Operationally, ranked in the top 8.2% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
Squid is affected by CVE-2023-46848, a denial-of-service vulnerability that arises when the proxy processes ftp:// URLs supplied inside HTTP request messages or constructed from native FTP input. The flaw is tracked under CWE-681 and carries a CVSS 3.1 score of 8.6, reflecting network attackability without authentication or user interaction and a scope change that can fully impair availability.
A remote attacker can exploit the issue simply by sending crafted requests containing ftp:// URLs, causing the Squid process to crash or become unresponsive and thereby denying service to legitimate users.
Red Hat has issued multiple security updates (RHSA-2023:6266, RHSA-2023:6268, RHSA-2023:6748) and maintains a Bugzilla entry (2245919) that describe the affected packages and provide patched versions for supported Red Hat products. The associated EPSS probability reached a peak of 0.1042 before declining to its current value of 0.0716.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-51014
Vulnerability details
Squid is vulnerable to Denial of Service, where a remote attacker can perform DoS by sending ftp:// URLs in HTTP Request messages or constructing ftp:// URLs from FTP Native input.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
No mitigating controls mapped yet. The per-CVE control annotator has not reached this CVE.