Is CVE-2021-30465 in the CISA KEV catalog?

No. CVE-2021-30465 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-30465?

CVE-2021-30465 has a CVSS v3 base score of 8.5 (HIGH).

What is the EPSS score for CVE-2021-30465?

CVE-2021-30465 has an EPSS score of 6.60% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-30465?

Upgrade runc on debian 11 to 1.0.0~rc93+ds1-5 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-30465

HIGHEPSS 93th pctl

8.5

CVSS v3

NVD

Description

runc before 1.0.0-rc95 allows a Container Filesystem Breakout via Directory Traversal. To exploit the vulnerability, an attacker must be able to create multiple containers with a fairly specific mount configuration. The problem occurs via a symlink-exchange attack that relies on a race condition.

CWE-362Race Condition

How to fix

Remediation Available

runcDebian

Fixed in:1.0.0~rc93+ds1-5CVE-2021-30465

runcUbuntu

Fixed in:1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm2USN-4867-1

Fixed in:1.0.0~rc93-0ubuntu1~18.04.2USN-4960-1

Fixed in:1.0.0~rc93-0ubuntu1~20.04.2USN-4960-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Exploit Intelligence

6.60%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch2

Third-Party Advisory4

Issue Tracking1

bugzilla.opensuse.org

Other references3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.