CVE-2015-1821

CVSS V2 Medium 6.5 CVSS V3 None
Description
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.
Overview
  • CVE ID
  • CVE-2015-1821
  • Assigner
  • secalert@redhat.com
  • Vulnerability Status
  • Modified
  • Published Version
  • 2015-04-16T14:59:01
  • Last Modified Date
  • 2023-02-13T00:47:10
Weakness Enumerations
CWE URL
CWE-119 http://cwe.mitre.org/data/definitions/119.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:tuxfamily:chrony:*:*:*:*:*:*:*:* 1 OR 1.31
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:S/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 6.5
  • Severity
  • MEDIUM
  • Exploitability Score
  • 8
  • Impact Score
  • 6.4
References
Reference URL Reference Tags
http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html Patch Vendor Advisory
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://access.redhat.com/errata/RHSA-2015:2241
https://access.redhat.com/security/cve/CVE-2015-1821
https://bugzilla.redhat.com/show_bug.cgi?id=1209631
https://security.gentoo.org/glsa/201507-01
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2015-1821
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1821
History
Created Old Value New Value Data Type Notes
2022-05-10 09:40:54 Added to TrackCVE
2022-12-02 04:21:02 2015-04-16T14:59Z 2015-04-16T14:59:01 CVE Published Date updated
2022-12-02 04:21:02 2017-07-01T01:29:13 CVE Modified Date updated
2022-12-02 04:21:02 Modified Vulnerability Status updated
2023-02-02 21:04:59 2023-02-02T20:20:14 CVE Modified Date updated
2023-02-02 21:04:59 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. An out-of-bounds write flaw was found in the way Chrony stored certain addresses when configuring NTP or cmdmon access. An attacker that has the command key and is allowed to access cmdmon (only localhost is allowed by default) could use this flaw to crash chronyd or, possibly, execute arbitrary code with the privileges of the chronyd process. Description updated
2023-02-02 21:05:06 References updated
2023-02-13 01:05:54 2023-02-13T00:47:10 CVE Modified Date updated
2023-02-13 01:05:54 An out-of-bounds write flaw was found in the way Chrony stored certain addresses when configuring NTP or cmdmon access. An attacker that has the command key and is allowed to access cmdmon (only localhost is allowed by default) could use this flaw to crash chronyd or, possibly, execute arbitrary code with the privileges of the chronyd process. 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. Description updated