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CVE-2018-17963

CRITICALCVSS 9.8/10EPSS 4.78%

Last modified

CVE-2018-17963 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.. EPSS estimates a 4.78% chance of exploitation in the next 30 days.

Description

qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.

Metrics

CVSS 3.1
9.8/10

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

EPSS Probability
4.78%

90.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
QemuQemu<= 3.0.0—
QemuQemu3.1.0Rc0
DebianDebian Linux8.0—
DebianDebian Linux9.0—
CanonicalUbuntu Linux14.04—
CanonicalUbuntu Linux16.04—
CanonicalUbuntu Linux18.04—
CanonicalUbuntu Linux18.10—
RedhatOpenstack10—
RedhatOpenstack13—
RedhatOpenstack14—
RedhatVirtualization4.0—
RedhatVirtualization Manager4.3—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2018-17963?
qemu_deliver_packet_iov in net/net.c in Qemu accepts packet sizes greater than INT_MAX, which allows attackers to cause a denial of service or possibly have unspecified other impact.
How severe is CVE-2018-17963?
CVE-2018-17963 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 4.78% probability of exploitation in the next 30 days.
How do I fix CVE-2018-17963?
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.

Are you affected by CVE-2018-17963?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST