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CVE-2018-19591

HIGHCVSS 7.5/10EPSS 5.53%

Last modified

CVE-2018-19591 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.. EPSS estimates a 5.53% chance of exploitation in the next 30 days.

Description

In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.

Metrics

CVSS 3.1
7.5/10

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

EPSS Probability
5.53%

91.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
GnuGlibc<= 2.28
FedoraprojectFedora28
FedoraprojectFedora29

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-19591?
In the GNU C Library (aka glibc or libc6) through 2.28, attempting to resolve a crafted hostname via getaddrinfo() leads to the allocation of a socket descriptor that is not closed. This is related to the if_nametoindex() function.
How severe is CVE-2018-19591?
CVE-2018-19591 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 5.53% probability of exploitation in the next 30 days.
How do I fix CVE-2018-19591?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST