CVE-2015-1821

Publication date 16 April 2015

Last updated 24 July 2024

Ubuntu priority

Medium

Why this priority?

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.

From the Ubuntu Security Team

Miroslav Lichvár discovered a head-based buffer overflow in chrony. A remote attacker could use this vulnerability to cause a denial of service (crash) or execute arbitrary code.

Status

Package Ubuntu Release Status
chrony 18.10 cosmic
Not affected
18.04 LTS bionic
Not affected
17.10 artful
Not affected
17.04 zesty Ignored end of life
16.10 yakkety Ignored end of life
16.04 LTS xenial
Not affected
15.10 wily Ignored end of life
15.04 vivid Ignored end of life
14.10 utopic Ignored end of life
14.04 LTS trusty
Fixed 1.29-1ubuntu0.1
12.04 LTS precise Ignored end of life
10.04 LTS lucid Ignored end of life

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
chrony