Integer overflow in Qemu
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.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.047 (91.6th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 92nd percentile — 91.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.047 · newest: 0.047 · change: 0.000
Affected products
- Qemu — versions 3.1.0
- Canonical Ubuntu Linux — versions 14.04, 16.04, 18.04
- Debian Linux — versions 8.0, 9.0
- Red Hat OpenStack — versions 10, 13, 14
- Red Hat Virtualization — versions 4.0
- Red Hat Virtualization Manager — versions 4.3
Weakness classification (CWE)
References
- www.openwall.com/lists/oss-security/2018/10/08/1 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2018/dsa-4338 (vendor-advisory, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2018-09/msg03267.html (mailing-list, Patch, Mailing List, Third Party Advisory)
- usn.ubuntu.com/3826-1/ (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/11/msg00038.html (mailing-list, Mailing List, Third Party Advisory)
- lists.gnu.org/archive/html/qemu-devel/2018-11/msg06054.html (Patch, Mailing List, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2166 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2425 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2019:2553 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-17963?
- CVE-2018-17963 is a critical-severity vulnerability in Qemu, classified under Integer Overflow or Wraparound. CVSS score: 9.8/10. Published 2018-10-09.
- How severe is CVE-2018-17963?
- Critical severity. CVSS v3 base score is 9.8 out of 10.