PT-2015-5458 · Chrony+3 · Chrony+3

Miroslav Lichvar · Published 2015-04-12 · Updated 2023-02-13 · CVE-2015-1821

Positive Technologies (AI Summary)

CVSS v2.0

6.5

Medium

Base vector

AV:N/AC:L/Au:S/C:P/I:P/A:P

Name of the Vulnerable Software and Affected Versions chrony versions prior to 1.31.1

Description The issue allows remote authenticated users to cause a denial of service or possibly execute arbitrary code by configuring NTP or cmdmon access with a subnet size that is indivisible by four and an address with a nonzero bit in the subnet remainder.

Recommendations For versions prior to 1.31.1, update to version 1.31.1 or later to resolve the issue. As a temporary workaround, consider restricting access to the NTP and cmdmon configurations to minimize the risk of exploitation. Avoid using subnet sizes that are indivisible by four and addresses with nonzero bits in the subnet remainder in the affected configurations until the issue is resolved.

Fix

DoS

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

ALT-PU-2015-2089

CESA-2015_2241

CVE-2015-1821

DLA-193-1

DSA-3222-1

MGASA-2015-0163

RHSA-2015:2241

RHSA-2015_2241

Affected Products

Alt Linux

Centos

Red Hat

Chrony

References · 38

• https://nvd.nist.gov/vuln/detail/CVE-2015-1821 · Security Note
• http://listengine.tuxfamily.org/chrony.tuxfamily.org/chrony-announce/2015/04/msg00002.html · Vendor Advisory
• https://advisories.mageia.org/MGASA-2015-0163.html · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-1821 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2015-1821 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1821 · Security Note
• https://security.gentoo.org/glsa/201507-01 · Vendor Advisory
• https://debian.org/security/2015/dsa-3222 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2015-1821 · Vendor Advisory
• https://cve.org/CVERecord?id=CVE-2015-1821 · Security Note
• https://ubuntu.com/security/CVE-2015-1821 · Vendor Advisory
• https://osv.dev/vulnerability/DSA-3222-1 · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2015-1821 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/chrony · Vendor Advisory
• https://security-tracker.debian.org/tracker/DSA-3222-1 · Vendor Advisory