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OVAL Definitions
>
OVAL Definition Details
Id
oval:ru.altx-soft.nix:def:500
[Eng]
Version
5
Class
patch
ALTXid
34895
Language
Russian
Severity
NotAvailable
Title
Обновление DSA-1992-1 chrony - несколько уязвимостей
Description
Several vulnerabilities have been discovered in chrony, a pair of programs which are used to maintain the accuracy of the system clock on a computer. This issues are similar to the NTP security flaw CVE-2009-3563. The Common Vulnerabilities and Exposures project identifies the following problems: chronyd replies to all cmdmon packets with NOHOSTACCESS messages even for unauthorized hosts. An attacker can abuse this behaviour to force two chronyd instances to play packet ping-pong by sending such a packet with spoofed source address and port. This results in high CPU and network usage and thus denial of service conditions. The client logging facility of chronyd doesn"t limit memory that is used to store client information. An attacker can cause chronyd to allocate large amounts of memory by sending NTP or cmdmon packets with spoofed source addresses resulting in memory exhaustion. chronyd lacks of a rate limit control to the syslog facility when logging received packets from unauthorized hosts. This allows an attacker to cause denial of service conditions via filling up the logs and thus disk space by repeatedly sending invalid cmdmon packets.
Family
unix
Platform
Debian GNU/Linux 4.0
Debian GNU/Linux 5.0
Product
chrony
Reference
VENDOR: DSA-1992-1
VENDOR: DSA-1992-1
Id:
DSA-1992-1
Reference:
http://www.debian.org/security/2010/dsa-1992
CVE: CVE-2010-0292
CVE: CVE-2010-0292
Id:
CVE-2010-0292
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0292
Comment
: The read_from_cmd_socket function in cmdmon.c in chronyd in Chrony before 1.23.1, and 1.24-pre1, allows remote attackers to cause a denial of service (CPU and bandwidth consumption) by sending a spoofed cmdmon packet that triggers a continuous exchange of NOHOSTACCESS messages between two daemons, a related issue to CVE-2009-3563.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE:
399 (Resource Management Errors)
References:
38480 (SECUNIA)
38106 (BID)
http://chrony.tuxfamily.org/News.html (CONFIRM)
DSA-1992 (DEBIAN)
38428 (SECUNIA)
https://bugzilla.redhat.com/show_bug.cgi?id=555367 (CONFIRM)
http://git.tuxfamily.org/chrony/chrony.git/?p=gitroot/chrony/chrony.git%3Ba=commit%3Bh=7864c7a70ce00369194e734eb2842ecc5f8db531 ()
CVE: CVE-2010-0293
CVE: CVE-2010-0293
Id:
CVE-2010-0293
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0293
Comment
: The client logging functionality in chronyd in Chrony before 1.23.1 does not restrict the amount of memory used for storage of client information, which allows remote attackers to cause a denial of service (memory consumption) via spoofed (1) NTP or (2) cmdmon packets.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE:
399 (Resource Management Errors)
References:
38428 (SECUNIA)
DSA-1992 (DEBIAN)
38106 (BID)
http://chrony.tuxfamily.org/News.html (CONFIRM)
38480 (SECUNIA)
https://bugzilla.redhat.com/show_bug.cgi?id=555367 (CONFIRM)
http://git.tuxfamily.org/chrony/chrony.git/?p=gitroot/chrony/chrony.git%3Ba=commit%3Bh=2f63cf448560fdb96b80d8488aae6a15b802a753 ()
CVE: CVE-2010-0294
CVE: CVE-2010-0294
Id:
CVE-2010-0294
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0294
Comment
: chronyd in Chrony before 1.23.1, and possibly 1.24-pre1, generates a syslog message for each unauthorized cmdmon packet, which allows remote attackers to cause a denial of service (disk consumption) via a large number of invalid packets.
CVSSv2 Score:
5
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
NONE
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:N/A:P
CWE:
399 (Resource Management Errors)
References:
https://bugzilla.redhat.com/show_bug.cgi?id=555367 (CONFIRM)
http://chrony.tuxfamily.org/News.html (CONFIRM)
38106 (BID)
DSA-1992 (DEBIAN)
38428 (SECUNIA)
38480 (SECUNIA)
http://git.tuxfamily.org/chrony/chrony.git/?p=gitroot/chrony/chrony.git%3Ba=commit%3Bh=0b710499f994823bd938fc6895f097eefb9cc59f ()
CVE: CVE-2009-3563
CVE: CVE-2009-3563
Id:
CVE-2009-3563
Reference:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3563
Comment
: 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.
CVSSv2 Score:
6.4
Access vector:
NETWORK
Access complexity:
LOW
Authentication:
NONE
Confidentiality impact:
NONE
Integrity impact:
PARTIAL
Availability impact:
PARTIAL
CVSSv2 Vector:
AV:N/AC:L/Au:N/C:N/I:P/A:P
CWE:
CWE-Other ()
References:
RHSA-2009:1651 (REDHAT)
http://www.kb.cert.org/vuls/id/MAPG-7X7VD7 (CONFIRM)
DSA-1948 (DEBIAN)
http://support.ntp.org/bin/view/Main/SecurityNotice#DoS_attack_from_certain_NTP_mode (CONFIRM)
1023298 (SECTRACK)
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=560074 (CONFIRM)
37255 (BID)
RHSA-2009:1648 (REDHAT)
[announce] 20091208 NTP 4.2.4p8 Released (MLIST)
VU#568372 (CERT-VN)
http://security-tracker.debian.org/tracker/CVE-2009-3563 (CONFIRM)
https://support.ntp.org/bugs/show_bug.cgi?id=1331 (CONFIRM)
http://www.kb.cert.org/vuls/id/MAPG-7X7V6J (CONFIRM)
https://bugzilla.redhat.com/show_bug.cgi?id=531213 (CONFIRM)
FEDORA-2009-13121 (FEDORA)
FEDORA-2009-13090 (FEDORA)
RHSA-2010:0095 (REDHAT)
http://support.avaya.com/css/P8/documents/100071808 (CONFIRM)
37922 (SECUNIA)
IZ71047 (AIXAPAR)
37629 (SECUNIA)
http://aix.software.ibm.com/aix/efixes/security/xntpd_advisory.asc (CONFIRM)
ADV-2010-0510 (VUPEN)
38764 (SECUNIA)
IZ68659 (AIXAPAR)
38794 (SECUNIA)
ADV-2010-0528 (VUPEN)
38832 (SECUNIA)
38834 (SECUNIA)
[security-announce] 20100303 VMSA-2010-0004 ESX Service Console and vMA third party updates (MLIST)
NetBSD-SA2010-005 (NETBSD)
39593 (SECUNIA)
ADV-2010-0993 (VUPEN)
1021781 (SUNALERT)
SSRT101144 (HP)
HPSBUX02639 (HP)
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10691 (CONFIRM)
http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10673 (CONFIRM)
oval:org.mitre.oval:def:7076 (OVAL)
oval:org.mitre.oval:def:19376 (OVAL)
oval:org.mitre.oval:def:12141 (OVAL)
oval:org.mitre.oval:def:11225 (OVAL)
VU#417980 ()
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