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Bug 1625424 - (CVE-2018-16438) CVE-2018-16438 hdf5: out of bounds read in H5L_extern_query at H5Lexternal.c
CVE-2018-16438 hdf5: out of bounds read in H5L_extern_query at H5Lexternal.c
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
medium Severity medium
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Assigned To: Red Hat Product Security
impact=moderate,public=20180806,repor...
: Security
Depends On: 1625426 1625427 1629505 1629506 1629507 1629508 1629509 1629510
Blocks: 1625428
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Reported: 2018-09-04 18:03 EDT by Laura Pardo
Modified: 2018-09-27 02:34 EDT (History)
26 users (show)

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Doc Text:
An out of bounds read in H5L_extern_query at H5Lexternal.c was discovered in the HDF HDF5 1.8.20 library. Using a specially crafted file, an attacker could cause a denial of service condition due to inadequate bounds checking.
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Description Laura Pardo 2018-09-04 18:03:25 EDT 
An issue was discovered in the HDF HDF5 1.8.20 library. There is an out of bounds read in H5L_extern_query at H5Lexternal.c.


References:
https://github.com/TeamSeri0us/pocs/tree/master/hdf5/h5stat
Comment 1 Laura Pardo 2018-09-04 18:05:02 EDT 
Created hdf5 tracking bugs for this issue:

Affects: epel-all [bug 1625427]
Affects: fedora-all [bug 1625426]
Comment 2 James Hebden 2018-09-16 21:16:58 EDT 
Reproduced in hdf5 package on all RHOSP editions, using the provided reproducer file from the linked repository (https://github.com/TeamSeri0us/pocs/tree/master/hdf5/h5stat)

h5stat H5L_extern_query\@H5Lexternal.c\:498-10___out-of-bounds-read
Filename: H5L_extern_query@H5Lexternal.c:498-10___out-of-bounds-read
Segmentation fault (core dumped)

No upstream patch or source code analysis has been provided or performed, the backtrace provided in the PoC repository is the current best analysis.
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