Is CVE-2019-19921 in the CISA KEV catalog?

No. CVE-2019-19921 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2019-19921?

CVE-2019-19921 has a CVSS v3 base score of 7.0 (HIGH).

What is the EPSS score for CVE-2019-19921?

CVE-2019-19921 has an EPSS score of 0.46% (36th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2019-19921?

Upgrade runc on debian 11 to 1.0.0~rc10+dfsg1-1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2019-19921

HIGH

7.0

CVSS v3

NVD

Description

runc through 1.0.0-rc9 has Incorrect Access Control leading to Escalation of Privileges, related to libcontainer/rootfs_linux.go. To exploit this, an attacker must be able to spawn two containers with custom volume-mount configurations, and be able to run custom images. (This vulnerability does not affect Docker due to an implementation detail that happens to block the attack.)

CWE-706

How to fix

Remediation Available

runcDebian

Fixed in:1.0.0~rc10+dfsg1-1CVE-2019-19921

runcUbuntu

Fixed in:1.0.0~rc7+git20190403.029124da-0ubuntu1~16.04.4+esm4USN-6088-2

Fixed in:1.0.0~rc10-0ubuntu1~18.04.2USN-4297-1

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 VectorLocal

Attack ComplexityHigh

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.46%probability of exploitation in 30 days

36thpercentile

Low risk: more likely to be exploited than 36% of all known CVEs.

References

Patch1

github.com

Third-Party Advisory8

Other references6

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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.