CVE-2021-30457 — ID-MAP
CRITICALCVE-2021-30457 is a critical-severity (CVSS 9.8) CWE-415 vulnerability in id-map_project id-map. No vendor fix is recorded yet; mitigation options are listed below.
An issue was discovered in the id-map crate through 2021-02-26 for Rust. A double free can occur in remove_set upon a panic in a Drop impl.
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2021-30457 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Description
An issue was discovered in the id-map crate through 2021-02-26 for Rust. A double free can occur in remove_set upon a panic in a Drop impl.
Affected Products
id-mapid-map_projectDetection & mitigation playbook
Vendor / applianceDetect
Inventory every id-map_project id-map deployment and check each version against the affected-products list above.
Remediation status
No patch has shipped for CVE-2021-30457 yet — track the id-map_project id-map advisory for a fixed release and apply the workarounds below in the meantime.
Mitigate without a patch
Constrain what reaches the vulnerable code: limit the size and shape of untrusted input, isolate the affected component in a sandboxed or least-privileged process, and enable the platform's memory-safety mitigations (ASLR, stack protector, hardened allocator) so an out-of-bounds access is more likely to fail closed than to be exploitable. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
Frequently Asked Questions
Is CVE-2021-30457 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.