PT-2019-7172 · Chrony+3 · Chrony+3

Published 2015-04-12 · Updated 2023-02-13 · CVE-2015-1853

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

Description The issue allows remote attackers with knowledge of NTP peering to cause a denial of service, specifically the inability to synchronize, by sending crafted NTP data packets with random timestamps in authenticated symmetric NTP associations.

Recommendations For versions prior to 1.31.1, update to version 1.31.1 or later to resolve the issue.

Fix

Related Identifiers

ALT-PU-2015-2089

CESA-2015_2241

CVE-2015-1853

DLA-193-1

DSA-3222-1

MGASA-2015-0163

RHSA-2015:2241

RHSA-2015_2241

Affected Products

Alt Linux

Centos

Red Hat

Chrony

References · 33

• https://errata.altlinux.org/ALT-PU-2015-2089 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1853 · Security Note
• https://advisories.mageia.org/MGASA-2015-0163.html · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1821 · Security Note
• https://cve.org/CVERecord?id=CVE-2015-1853 · Security Note
• https://osv.dev/vulnerability/CVE-2015-1853 · Vendor Advisory
• https://ubuntu.com/security/CVE-2015-1853 · Vendor Advisory
• http://chrony.tuxfamily.org/News.html · Vendor Advisory
• https://security-tracker.debian.org/tracker/CVE-2015-1853 · Vendor Advisory
• https://osv.dev/vulnerability/UBUNTU-CVE-2015-1853 · Vendor Advisory
• https://debian.org/security/2015/dsa-3222 · Vendor Advisory
• https://security-tracker.debian.org/tracker/source-package/chrony · Vendor Advisory
• https://osv.dev/vulnerability/MGASA-2015-0163 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2015-1853 · Security Note
• https://osv.dev/vulnerability/DEBIAN-CVE-2015-1853 · Vendor Advisory