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7.5 High

CVE-2023-24534 HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs, potentially leading…

Description

HTTP and MIME header parsing can allocate large amounts of memory, even when parsing small inputs, potentially leading to a denial of service. Certain unusual patterns of input data can cause the common function used to parse HTTP and MIME headers to allocate substantially more memory than required to hold the parsed headers. 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 a denial of service. With fix, header parsing now correctly allocates only the memory required to hold parsed headers.

Affected products and versions

Product Affected versions Fixed in
net/textproto 1.20 1.20.0-0 → < 1.20.3 1.20.3
net/textproto 1.19 earliest → < 1.19.8 1.19.8

References

Timeline

  1. Published
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