CVE-2015-1821: Buffer Overflow
First published: Thu Apr 16 2015(Updated: )
Heap-based buffer overflow in chrony before 1.31.1 allows remote authenticated users to cause a denial of service (chronyd crash) or possibly execute arbitrary code by configuring the (1) NTP or (2) cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Chrony | <=1.31 | |
| Debian Linux | =7.0 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2015-1821?
CVE-2015-1821 has a medium severity rating due to potential denial of service and arbitrary code execution risks.
How do I fix CVE-2015-1821?
To fix CVE-2015-1821, upgrade to Chrony version 1.31.1 or later, which addresses the buffer overflow vulnerability.
Who is affected by CVE-2015-1821?
CVE-2015-1821 affects users of Chrony versions before 1.31.1, especially those running on certain Debian GNU/Linux distributions.
What type of vulnerability is CVE-2015-1821?
CVE-2015-1821 is a heap-based buffer overflow vulnerability that can lead to crashes or arbitrary code execution.
Can CVE-2015-1821 be exploited remotely?
Yes, CVE-2015-1821 can be exploited by remote authenticated users who can configure NTP or cmdmon access incorrectly.
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- vendor/tuxfamily
- canonical/chrony
- version/chrony/1.31
- vendor/debian
- canonical/debian linux
- version/debian linux/7.0