What is CVE-2018-5744?

CVE-2018-5744 is a high-severity vulnerability in Isc Bind, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2019-10-09.

How severe is CVE-2018-5744?

High severity. CVSS v3 base score is 7.5 out of 10.

Is CVE-2018-5744 known to be exploited?

10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Vulnerability in Isc Bind

CVE-2018-5744

A failure to free memory can occur when processing messages having a specific combination of EDNS options. Versions affected are: BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

EPSS: 0.034 (87.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Isc Bind — versions 9.10.7, 9.10.8, 9.11.5
Isc Bind 9 — versions BIND 9.10.7 -> 9.10.8-P1, 9.11.3 -> 9.11.5-P1, 9.12.0 -> 9.12.3-P1, and versions 9.10.7-S1 -> 9.11.5-S3 of BIND 9 Supported Preview Edition. Versions 9.13.0 -> 9.13.6 of the 9.13 development branch are also affected.

Weakness classification (CWE)

CWE-772 — Missing Release of Resource after Effective Lifetime

Public proof-of-concept exploits

References

security-officer@isc.org (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2018-5744?: CVE-2018-5744 is a high-severity vulnerability in Isc Bind, classified under Missing Release of Resource after Effective Lifetime. CVSS score: 7.5/10. Published 2019-10-09.
How severe is CVE-2018-5744?: High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-5744 known to be exploited?: 10 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.