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Fencer Vulns
medium 6.5

CVE-2018-11203 json

A division by zero was discovered in H5D__btree_decode_key in H5Dbtree.c in the HDF HDF5 1.10.2 library.

published 2018-05-16 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-3243

cvss
6.5
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
1.7%
EPSS 1.7% chance of exploitation in 30 days, percentile 77%
public exploits
0
none known

Summary

A division by zero was discovered in H5D__btree_decode_key in H5Dbtree.c in the HDF HDF5 1.10.2 library. It could allow a remote denial of service attack.

Patch / fix

  • hdf5 Debian 14, Debian 13, Debian 12 1.10.4+repack-1

debian advisories DEBIAN-CVE-2018-11203

  • suse-hpc SLE Module for HPC 12 0.5.20220206.0c6b168-5.2
  • hdf5_1_10_8-gnu-hpc SLE Module for HPC 12 1.10.8-3.12.2
  • hdf5_1_10_8-gnu-mvapich2-hpc SLE Module for HPC 12 1.10.8-3.12.2
  • hdf5_1_10_8-gnu-openmpi1-hpc SLE Module for HPC 12 1.10.8-3.12.2
  • suse-hpc SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 0.5.20220206.0c6b168-150000.11.3.1
  • hdf5_1_10_8-gnu-hpc SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 1.10.8-150000.8.4.3
  • hdf5_1_10_8-gnu-mpich-hpc SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 1.10.8-150000.8.4.3
  • hdf5_1_10_8-gnu-mvapich2-hpc SLE High Performance Computing 15-LTSS, SLE High Performance Computing 15-ESPOS 1.10.8-150000.8.4.3

suse advisories SUSE-SU-2022:1933-1SUSE-SU-2022:1911-1SUSE-SU-2022:1910-1SUSE-SU-2022:1903-1

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-2018-11203 updated cvss 3.3

hdf5: division by zero in H5D__btree_decode_key in H5Dbtree.c

  • Red Hat Enterprise Linux 8 hdf5 Red Hat Enterprise Linux OpenStack Platform 7 (Kilo) hdf5 Red Hat OpenStack Platform 8 (Liberty) hdf5 Red Hat OpenStack Platform 9 (Mitaka) hdf5 Red Hat OpenStack Platform 10 (Newton) hdf5 Red Hat OpenStack Platform 12 (Pike) hdf5
    affected: no fix planned “Will not fix”
  • Red Hat OpenStack Platform 13 (Queens) hdf5
    affected: no fix available “Fix deferred”

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

1.70% chance of exploitation in the next 30 days, higher than 77% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/Twi1ight/fuzzing-pocs/tree/master/hdf5 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 3.0 6.5 CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
NVD 2.0 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P

Classification

Weakness

References

Sources

Fencer Vulns 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.