GitLab's response to a high severity vulnerability impacting curl and libcurl

On October 4, the developers of curl announced the upcoming release of version 8.4.0 to address a high severity vulnerability (CVE-2023-38545) that impacts curl and libcurl, leveraging a heap buffer overflow via the SOCKS5 protocol. GitLab investigated this vulnerability and confirmed that neither its GitLab.com nor GitLab Dedicated environments use SOCKS5, rendering them unaffected. However, self-managed customers using a SOCKS5 proxy should consult curl's security advisory to assess their exposure. The vulnerability affects libcurl versions 7.69.0 to 8.3.0, and upgrading to curl 8.4.0 is recommended for all affected users. GitLab's security and development teams took proactive measures to evaluate potential impacts on their platforms, users, and customers, emphasizing the security of their platform and customer data. They continue to monitor the situation and will provide updates as necessary.

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