CVE-2023-24534

Excessive memory allocation in net/http and net/textproto

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
EPSS 0.04%
Vendor Advisory go.dev Vendor Advisory go.dev Vendor Advisory go.dev
Affected: Go standard library net/textproto
Published at:
Updated at:

References

Frequently Asked Questions

What is the severity of CVE-2023-24534?
CVE-2023-24534 has been scored as a high severity vulnerability.
How to fix CVE-2023-24534?
To fix CVE-2023-24534, 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-2023-24534 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2023-24534 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-24534?
CVE-2023-24534 affects Go standard library net/textproto.
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