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…
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 32.1%, higher than 98% of all known CVEs. Patch or mitigate before the next change window.
Description
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.
- CVSS 2.0
- 6.4 MEDIUMAV:N/AC:L/Au:N/C:N/I:P/A:P
- EPSS
- 32.06% probability · 98th percentile
- CISA KEV
- Not listed
- Affected
- ntp/ntp
- Source
- cve@mitre.org
References
- ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2010-005.txt.asc
- 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_modePatch
- 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-1948Patch
- http://www.kb.cert.org/vuls/id/568372Patch, US Government Resource
- http://www.kb.cert.org/vuls/id/MAPG-7X7V6J
- http://www.kb.cert.org/vuls/id/MAPG-7X7VD7
- http://www.securityfocus.com/bid/37255Patch
- http://www.vupen.com/english/advisories/2010/0510
- http://www.vupen.com/english/advisories/2010/0528
- http://www.vupen.com/english/advisories/2010/0993
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.