CVE-2015-5276: Infoleak
First published: Mon Sep 14 2015(Updated: )
It was discovered that the std::random_device class in libstdc++ would not properly detect short reads and could return return predictable values if applications used it to obtain randomness from a blocking source such as /dev/random.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| GNU Compiler Collection (GCC) | <4.9.4 |
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Reference Links
- https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65142
- https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=227687
- https://gcc.gnu.org/viewcvs/gcc?view=revision&revision=227872
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1262852
- https://bugzilla.redhat.com/show_bug.cgi?id=1262846
- http://lists.opensuse.org/opensuse-updates/2015-11/msg00054.html
- http://lists.opensuse.org/opensuse-updates/2016-04/msg00052.html
- http://www.securitytracker.com/id/1034375
Frequently Asked Questions
What is the severity of CVE-2015-5276?
CVE-2015-5276 has been rated as moderate severity due to potential predictability in random number generation.
How do I fix CVE-2015-5276?
To fix CVE-2015-5276, upgrade to a version of the GNU Compiler Collection (GCC) later than 4.9.4.
What systems are affected by CVE-2015-5276?
CVE-2015-5276 affects versions of the GNU Compiler Collection (GCC) up to and including 4.9.4.
What does CVE-2015-5276 affect in libstdc++?
CVE-2015-5276 affects the std::random_device class in libstdc++, allowing predictable values when reading from certain randomness sources.
Is CVE-2015-5276 exploitable?
CVE-2015-5276 can be exploited if applications rely on the std::random_device class for secure random value generation.
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