Is CVE-2018-6556 in the CISA KEV catalog?

No. CVE-2018-6556 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2018-6556?

CVE-2018-6556 has a CVSS v3 base score of 3.3 (LOW).

What is the EPSS score for CVE-2018-6556?

CVE-2018-6556 has an EPSS score of 0.35% (27th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2018-6556?

Upgrade lxc on debian 11 to 1:2.0.9-6.1 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2018-6556

LOW

3.3

CVSS v3

NVD

Description

lxc-user-nic when asked to delete a network interface will unconditionally open a user provided path. This code path may be used by an unprivileged user to check for the existence of a path which they wouldn't otherwise be able to reach. It may also be used to trigger side effects by causing a (read-only) open of special kernel files (ptmx, proc, sys). Affected releases are LXC: 2.0 versions above and including 2.0.9; 3.0 versions above and including 3.0.0, prior to 3.0.2.

CWE-417

How to fix

Remediation Available

lxcDebian

Fixed in:1:2.0.9-6.1CVE-2018-6556

lxcUbuntu

Fixed in:3.0.1-0ubuntu1~18.04.2USN-3730-1

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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityLow

IntegrityNone

AvailabilityNone

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

Exploit Intelligence

0.35%probability of exploitation in 30 days

27thpercentile

Low risk: more likely to be exploited than 27% of all known CVEs.

References

Patch1

bugzilla.suse.com

Third-Party Advisory6

Other references1

lists.opensuse.org

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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.