CVE-2015-1822
Chrony Remote Code Execution and Denial of Service Vulnerability
Description
chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows remote authenticated users to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a large number of command requests.
INFO
Published Date :
April 16, 2015, 2:59 p.m.
Last Modified :
Feb. 13, 2023, 12:47 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
6.4
Exploitability Score :
8.0
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2015-1822.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2015-1822 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2015-1822 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
CVE Modified by [email protected]
Feb. 13, 2023
Action Type Old Value New Value Changed Description An uninitialized pointer use flaw was found when allocating memory to save unacknowledged replies to authenticated command requests. 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. chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows remote authenticated users to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a large number of command requests. Removed CVSS V2 Red Hat, Inc. (AV:N/AC:M/Au:S/C:P/I:P/A:P) Removed Reference https://access.redhat.com/errata/RHSA-2015:2241 [No Types Assigned] Removed Reference https://access.redhat.com/security/cve/CVE-2015-1822 [No Types Assigned] Removed Reference https://bugzilla.redhat.com/show_bug.cgi?id=1209632 [No Types Assigned] -
CVE Modified by [email protected]
Feb. 02, 2023
Action Type Old Value New Value Changed Description chrony before 1.31.1 does not initialize the last "next" pointer when saving unacknowledged replies to command requests, which allows remote authenticated users to cause a denial of service (uninitialized pointer dereference and daemon crash) or possibly execute arbitrary code via a large number of command requests. An uninitialized pointer use flaw was found when allocating memory to save unacknowledged replies to authenticated command requests. 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. Added CVSS V2 Red Hat, Inc. (AV:N/AC:M/Au:S/C:P/I:P/A:P) Added Reference https://bugzilla.redhat.com/show_bug.cgi?id=1209632 [No Types Assigned] Added Reference https://access.redhat.com/errata/RHSA-2015:2241 [No Types Assigned] Added Reference https://access.redhat.com/security/cve/CVE-2015-1822 [No Types Assigned] -
CVE Modified by [email protected]
Jul. 01, 2017
Action Type Old Value New Value Added Reference https://security.gentoo.org/glsa/201507-01 [No Types Assigned] -
CVE Modified by [email protected]
Nov. 28, 2016
Action Type Old Value New Value Added Reference http://www.securityfocus.com/bid/73956 [No Types Assigned] -
CVE Modified by [email protected]
Oct. 15, 2016
Action Type Old Value New Value Added Reference http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html -
Modified Analysis by [email protected]
Apr. 17, 2015
Action Type Old Value New Value Added CPE Configuration Configuration 1 OR *cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* Configuration 2 OR *cpe:2.3:a:tuxfamily:chrony:1.31:*:*:*:*:*:*:* (and previous) Added CVSS V2 (AV:N/AC:L/Au:S/C:P/I:P/A:P) Changed Reference Type http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html No Types Assigned http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html Advisory, Patch Added CWE CWE-17 -
Initial Analysis by [email protected]
Apr. 17, 2015
Action Type Old Value New Value
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2015-1822 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2015-1822
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.86 }} 0.02%
score
0.79943
percentile