How severe is CVE-2018-1102?

CVE-2018-1102 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-1102 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-1102?

CVE-2018-1102 primarily affects Redhat Openshift. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2018-1102?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-1102 published?

CVE-2018-1102 was published on 2018-04-30 and last updated on 2026-06-17.

CVE-2018-1102

CVE-2018-1102 is a high-severity vulnerability in Redhat Openshift with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 6.5
EPSS exploit prediction: 2% (82nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Redhat Openshift
Published: 2018-04-30
Last modified: 2026-06-17

Description

A flaw was found in source-to-image function as shipped with Openshift Enterprise 3.x. An improper path validation of tar files in ExtractTarStreamFromTarReader in tar/tar.go leads to privilege escalation.

Frequently asked questions

What is CVE-2018-1102?: A flaw was found in source-to-image function as shipped with Openshift Enterprise 3.x. An improper path validation of tar files in ExtractTarStreamFromTarReader in tar/tar.go leads to privilege escalation.
How severe is CVE-2018-1102?: CVE-2018-1102 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-1102 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-1102?: CVE-2018-1102 primarily affects Redhat Openshift. In total, 10 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2018-1102?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-1102 published?: CVE-2018-1102 was published on 2018-04-30 and last updated on 2026-06-17.

References

Affected products (10)

cpe:2.3:a:redhat:openshift:3.0:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.1:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.2:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.3:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.4:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.5:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.6:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.7:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.8:*:*:*:enterprise:*:*:*
cpe:2.3:a:redhat:openshift:3.9:*:*:*:enterprise:*:*:*

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