CVE-2024-45402: Picotls double free
First published: Fri Oct 11 2024(Updated: )
Picotls is a TLS protocol library that allows users select different crypto backends based on their use case. When parsing a spoofed TLS handshake message, picotls (specifically, bindings within picotls that call the crypto libraries) may attempt to free the same memory twice. This double free occurs during the disposal of multiple objects without any intervening calls to malloc Typically, this triggers the malloc implementation to detect the error and abort the process. However, depending on the internals of malloc and the crypto backend being used, the flaw could potentially lead to a use-after-free scenario, which might allow for arbitrary code execution. The vulnerability is addressed with commit 9b88159ce763d680e4a13b6e8f3171ae923a535d.
Credit: security-advisories@github.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Dena Picotls | >=2024-08-12<2024-10-10 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2024-45402?
CVE-2024-45402 is considered a medium severity vulnerability due to its potential to cause memory corruption.
How do I fix CVE-2024-45402?
To fix CVE-2024-45402, update to the latest version of Dena Picotls released after October 10, 2024.
What software is affected by CVE-2024-45402?
CVE-2024-45402 affects Dena Picotls versions from August 12, 2024, to October 10, 2024.
What type of vulnerability is CVE-2024-45402?
CVE-2024-45402 is a memory corruption vulnerability that occurs during the parsing of TLS handshake messages.
What can happen if CVE-2024-45402 is exploited?
Exploitation of CVE-2024-45402 may lead to application crashes or unexpected behavior due to double-free memory errors.
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