CVE-2009-3563

ntp_request.c in ntpd in NTP before 4.2.4p8, and 4.2.5, allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by using MODE_PRIVATE to send a spoofed (1) request or (2) response packet that triggers a continuous exchange of MODE_PRIVATE error responses between two NTP daemons.

Score

CVSS 2.0 6.4 Medium

Status

Modified - cve@mitre.org

Published

2009-12-09

Last modified

2024-08-07

Affected products

• Ntp (Ntp)

References

• http://aix.software.ibm.com/aix/efixes/security/xntpd_advisory.asc
• http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560074
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673
• http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10691
• http://lists.vmware.com/pipermail/security-announce/2010/000082.html
• http://marc.info/?l=bugtraq&m=130168580504508&w=2
• http://marc.info/?l=bugtraq&m=136482797910018&w=2
• http://secunia.com/advisories/37629
• http://secunia.com/advisories/37922
• http://secunia.com/advisories/38764
• http://secunia.com/advisories/38794
• http://secunia.com/advisories/38832
• http://secunia.com/advisories/38834
• http://secunia.com/advisories/39593
• http://security-tracker.debian.org/tracker/CVE-2009-3563
• http://securitytracker.com/id?1023298
• http://sunsolve.sun.com/search/document.do?assetkey=1-77-1021781.1-1
• http://support.avaya.com/css/P8/documents/100071808
• http://support.ntp.org/bin/view/Main/SecurityNotice#DoS_attack_from_certain_NTP_mode
• http://www-01.ibm.com/support/docview.wss?uid=isg1IZ68659
• http://www-01.ibm.com/support/docview.wss?uid=isg1IZ71047
• http://www.debian.org/security/2009/dsa-1948
• http://www.kb.cert.org/vuls/id/568372
• http://www.kb.cert.org/vuls/id/MAPG-7X7V6J
• http://www.kb.cert.org/vuls/id/MAPG-7X7VD7
• http://www.securityfocus.com/bid/37255
• http://www.vupen.com/english/advisories/2010/0510
• http://www.vupen.com/english/advisories/2010/0528
• http://www.vupen.com/english/advisories/2010/0993