Is CVE-2017-7562 in the CISA KEV catalog?

No. CVE-2017-7562 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2017-7562?

CVE-2017-7562 has a CVSS v3 base score of 6.5 (MEDIUM).

What is the EPSS score for CVE-2017-7562?

CVE-2017-7562 has an EPSS score of 3.30% (87th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2017-7562?

Upgrade kerberos 5 to 1.16.1 or later.

CVE & CISA-KEV Catalog

CVE-2017-7562

MEDIUMEPSS 87th pctl

6.5

CVSS v3

NVD

Description

An authentication bypass flaw was found in the way krb5's certauth interface before 1.16.1 handled the validation of client certificates. A remote attacker able to communicate with the KDC could potentially use this flaw to impersonate arbitrary principals under rare and erroneous circumstances.

CWE-287Improper Authentication CWE-295Improper Certificate Validation

How to fix

Remediation Available

kerberos 5NVD

Affected:>= 1.0, < 1.16.1Fixed in:1.16.1CVE-2017-7562derived from NVD

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 ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityHigh

AvailabilityNone

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

Exploit Intelligence

3.30%probability of exploitation in 30 days

87thpercentile

Elevated risk: more likely to be exploited than 87% of all known CVEs.

References

Patch2

Third-Party Advisory5

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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.