REDHAT-BUG-1660423
First published: Tue Dec 18 2018(Updated: )
There is a heap-based buffer over-read in the Exiv2::tEXtToDataBuf function of pngimage.cpp in Exiv2 0.27-RC3. A crafted input will lead to a denial of service attack. Upstream issue: <a href="https://github.com/Exiv2/exiv2/issues/590">https://github.com/Exiv2/exiv2/issues/590</a> References: <a href="https://github.com/TeamSeri0us/pocs/tree/master/exiv2/20181206">https://github.com/TeamSeri0us/pocs/tree/master/exiv2/20181206</a>
| Affected Software | Affected Version | How to fix |
|---|---|---|
| CentOS Dos2unix |
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Reference Links
- https://github.com/Exiv2/exiv2/issues/590
- https://github.com/TeamSeri0us/pocs/tree/master/exiv2/20181206
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1660427
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1660428
- https://github.com/Exiv2/exiv2/commit/4f9c912c2267f1bc33d9c28f1b063d571770af75
- https://github.com/Exiv2/exiv2/commit/902dad0a6eae98b0057cae1b13e78f476f053fae
- https://access.redhat.com/support/policy/updates/errata/
- https://access.redhat.com/security/updates/classification/
- https://access.redhat.com/errata/RHSA-2019:2101
- https://access.redhat.com/security/cve/cve-2018-20096
- https://access.redhat.com/errata/RHSA-2020:1577
- https://bugzilla.redhat.com/show_bug.cgi?id=1660423
Frequently Asked Questions
What is the severity of REDHAT-BUG-1660423?
The severity of REDHAT-BUG-1660423 is considered high due to the potential for denial of service attacks.
How do I fix REDHAT-BUG-1660423?
To fix REDHAT-BUG-1660423, update Exiv2 to the latest stable version that addresses the vulnerability.
What kind of impact does REDHAT-BUG-1660423 have on my system?
REDHAT-BUG-1660423 can lead to a denial of service, making the affected application unresponsive.
Which versions of Exiv2 are affected by REDHAT-BUG-1660423?
Exiv2 version 0.27-RC3 is specifically mentioned as having the vulnerability in REDHAT-BUG-1660423.
Is there a workaround for REDHAT-BUG-1660423?
Currently, there are no known workarounds for REDHAT-BUG-1660423; the best approach is to update the software.
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