CVE-2019-9923: Null Pointer Dereference
First published: Fri Mar 22 2019(Updated: )
pax_decode_header in sparse.c in GNU Tar before 1.32 had a NULL pointer dereference when parsing certain archives that have malformed extended headers.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU tar | <1.32 | |
| openSUSE Leap | =15.0 |
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Reference Links
- http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html
- http://savannah.gnu.org/bugs/?55369
- https://bugs.launchpad.net/ubuntu/+source/tar/+bug/1810241
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E
- https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E
Frequently Asked Questions
What is CVE-2019-9923?
CVE-2019-9923 is a vulnerability in GNU Tar before version 1.32 that allows for a NULL pointer dereference when parsing certain archives with malformed extended headers.
How does CVE-2019-9923 affect GNU Tar?
CVE-2019-9923 affects GNU Tar versions before 1.32, potentially causing a NULL pointer dereference while parsing specific archives with malformed extended headers.
What is the severity of CVE-2019-9923?
The severity of CVE-2019-9923 is high, with a CVSS severity score of 7.5.
How can I fix CVE-2019-9923?
To fix CVE-2019-9923, it is recommended to update GNU Tar to version 1.32 or later.
Are there any references related to CVE-2019-9923?
Yes, the following references provide more information about CVE-2019-9923: [Reference 1](http://git.savannah.gnu.org/cgit/tar.git/commit/?id=cb07844454d8cc9fb21f53ace75975f91185a120), [Reference 2](http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00077.html), [Reference 3](http://savannah.gnu.org/bugs/?55369).
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