CVE-2021-3593
3.8 · LOWOverview
CVE-2021-3593 is a low-severity vulnerability affecting libslirp_project libslirp. It was published on June 15, 2021 and has a CVSS 3.1 base score of 3.8 (LOW).
This vulnerability has a CVSS 3.1 base score of 3.8, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_input() function and could occur while processing a udp packet that is smaller than the size of the 'udphdr' structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. This flaw affects libslirp versions prior to 4.6.0.
Remediation
Check the references section for vendor advisories and patches from libslirp_project. Update libslirp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| libslirp_project | libslirp | >= 0, < 4.6.0 | Affected |
References
Frequently Asked Questions
What is CVE-2021-3593?
CVE-2021-3593 is a low-severity vulnerability affecting libslirp_project libslirp. It was published on June 15, 2021 and has a CVSS 3.1 base score of 3.8 (LOW).
How severe is CVE-2021-3593?
This vulnerability has a CVSS 3.1 base score of 3.8, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2021-3593?
Check the references section for vendor advisories and patches from libslirp_project. Update libslirp to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2021-3593?
CyberStrike's AI-powered security agents can automatically detect CVE-2021-3593 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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