CVE-2023-24534: 
Go vulnerability analysis and mitigation

CVE-2023-24534 is a vulnerability in HTTP and MIME header parsing functionality that was discovered in Go programming language. The vulnerability was disclosed on April 6, 2023, affecting Go versions prior to 1.19.8 and versions 1.20.0 through 1.20.3. The issue allows attackers to cause denial of service through excessive memory allocation when parsing HTTP and MIME headers (Go Announcement, NVD).

The vulnerability stems from a common function used to parse HTTP and MIME headers that could allocate substantially more memory than required to hold the parsed headers. When processing certain unusual patterns of input data, the parser would allocate large amounts of memory even for small inputs. The vulnerability has been assigned a CVSS v3.1 base score of 7.5 (HIGH) with vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H (NVD, NetApp Advisory).

The primary impact of this vulnerability is the potential for denial of service attacks. An attacker can exploit this behavior to cause an HTTP server to allocate large amounts of memory from a small request, potentially leading to memory exhaustion and service disruption. The vulnerability affects any applications using the affected Go versions for HTTP and MIME header parsing (Go Announcement).

The vulnerability is remotely exploitable and requires no authentication or user interaction. It can be triggered by sending specially crafted HTTP requests to affected servers. NetApp has acknowledged public discussion of this vulnerability, indicating potential exploitation in the wild (NetApp Advisory).

The vulnerability has been fixed in Go versions 1.19.8 and 1.20.3. The fix ensures that header parsing correctly allocates only the memory required to hold parsed headers. Users are advised to upgrade to these or later versions. No workarounds are available for users who cannot upgrade immediately (Go Announcement, Gentoo Advisory).