Buffer overflow in Debian Linux - CVE-2015-1821
Published: April 16, 2015 / Updated: August 9, 2020
Vulnerability identifier: #VU40824
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2015-1821
CWE-ID: CWE-119
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Debian
Affected software:
Debian Linux
Debian Linux
Detailed vulnerability description
The vulnerability allows a remote #AU# to read and manipulate data.
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.
How to mitigate CVE-2015-1821
Install update from vendor's website.
Sources
- http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html
- http://www.debian.org/security/2015/dsa-3222
- http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html
- http://www.securityfocus.com/bid/73955
- https://security.gentoo.org/glsa/201507-01