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Fencer Intel
medium 5.5

CVE-2017-11434 json

The dhcp_decode function in slirp/bootp.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (out-of-bou…

published 9y ago modified 4mo ago also EUVD-2017-3055

cvss
5.5
version 3.1, NVD
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 35%
public exploits
0
none known

Summary

The dhcp_decode function in slirp/bootp.c in QEMU (aka Quick Emulator) allows local guest OS users to cause a denial of service (out-of-bounds read and QEMU process crash) via a crafted DHCP options string.

Patch / fix

  • qemu Debian 14, Debian 13, Debian 12 1:2.8+dfsg-7

debian advisories DEBIAN-CVE-2017-11434

  • qemu Ubuntu 14.04 LTS 2.0.0+dfsg-2ubuntu1.35
  • qemu Ubuntu 16.04 LTS 1:2.5+dfsg-5ubuntu10.15

ubuntu advisories UBUNTU-CVE-2017-11434

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • kvm SLES 11 SP3-TERADATA, SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 1.4.2-53.11.1
  • xen SLES 12 SP3, SLED 12 SP3, SLE Software Development Kit 12 SP3 +1 more 4.9.0_11-3.9.1
  • kvm SLES for SAP 11 SP4, SLES 11 SP4 1.4.2-60.3.1
  • qemu SLES for SAP 12 SP1, SLES 12 SP1-LTSS, OpenStack Cloud 6 2.3.1-33.3.3
  • qemu SLES for SAP 12 SP2, SLES for Raspberry Pi 12 SP2, SLES 12 SP2 +1 more 2.6.2-41.22.2
  • xen SLES for SAP 11 SP4, SLES 11 SP4, SLE Software Development Kit 11 SP4 4.4.4_22-61.9.2
  • qemu SLES for SAP 12 SP3, SLES 12 SP3, SLED 12 SP3 2.9.0-6.3.1
  • xen SLES 11 SP3-LTSS, SLE Point of Sale 11 SP3 4.2.5_21-45.5.1

suse advisories SUSE-SU-2017:3084-1SUSE-SU-2017:2327-2SUSE-SU-2017:2327-1SUSE-SU-2017:2969-1SUSE-SU-2017:2963-1SUSE-SU-2017:2946-1

  • qemu openSUSE Tumbleweed 6.1.0-32.1

opensuse advisories openSUSE-SU-2024:11287-1

Is CVE-2017-11434 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2017-11434 updated cvss 4.3

Qemu: slirp: out-of-bounds read while parsing dhcp options

  • Red Hat Enterprise Linux 5 kvm Red Hat Enterprise Linux 6 qemu-img, qemu-kvm, qemu-kvm-tools, qemu-guest-agent, qemu-guest-agent-win32 Red Hat Enterprise Linux 7 qemu-img, qemu-kvm, libcacard, qemu-kvm-rhev, qemu-kvm-tools, libcacard-tools, +2 more Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 6 (Juno) qemu-kvm-rhev Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more
    +5 more products
    Red Hat OpenStack Platform 8 (Liberty) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more Red Hat OpenStack Platform 9 (Mitaka) qemu-img-rhev, qemu-kvm-rhev, libcacard-rhev, qemu-kvm-tools-rhev, libcacard-devel-rhev, libcacard-tools-rhev, +1 more Red Hat OpenStack Platform 10 (Newton) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev Red Hat OpenStack Platform 11 (Ocata) qemu-kvm-rhev Red Hat OpenStack Platform 12 (Pike) qemu-img-rhev, qemu-kvm-rhev, qemu-kvm-tools-rhev, qemu-kvm-common-rhev
    affected: no fix planned “Will not fix”
  • Red Hat Enterprise Linux 5 xen
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

0.41% chance of exploitation in the next 30 days, higher than 35% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
NVD 3.1 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
NVD 2.0 2.1 AV:L/AC:L/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.