1065 matches found
IPv6 fragments bypass in nf_conntrack netfilter code
nfconntrack in netfilter in the Linux kernel before 2.6.20.3 does not set nfctinfo during reassembly of fragmented packets, which leaves the default value as IPCTESTABLISHED and might allow remote attackers to bypass certain rulesets using IPv6 fragments...
CVE-2006-4520
ncp in Novell eDirectory before 8.7.3 SP9, and 8.8.x before 8.8.1 FTF2, does not properly handle NCP fragments with a negative length, which allows remote attackers to cause a denial of service daemon crash when the heap is written to a log file...
CVE-2006-4520
ncp in Novell eDirectory before 8.7.3 SP9, and 8.8.x before 8.8.1 FTF2, does not properly handle NCP fragments with a negative length, which allows remote attackers to cause a denial of service daemon crash when the heap is written to a log file...
Novell eDirectory NCP碎片长度拒绝服务漏洞
Novell eDirectory是一个的跨平台的目录服务器。 eDirectory产品的NCP功能在处理畸形的碎片请求时存在处理漏洞，远程攻击者可能利用此漏洞导致服务进程崩溃。 eDirectory产品的NCP功能如果收到了特制的输入，eDirectory会向其错误日志报告接受到了有无效长度的碎片，错误消息中包含16进制的碎片内容。但如果长度为负数的话，eDirectory就有可能将数据dump到日志中，导致将大量数据保存到日志。一旦到达了堆的末尾，就会触发内存破坏，服务进程会崩溃。 Novell eDirectory = 8.7.3.8 Novell eDirectory 8.8.1...
Sun Solaris IP实现远程拒绝服务漏洞
Solaris是一款由Sun开发和维护的商业性质UNIX操作系统。 Solaris 8/9的IP实现上存在安全漏洞，远程非特权用户可能利用此漏洞通过发送特制IP报文降低联网Solaris系统的性能。 Solaris系统上可见大量的伪造IP碎片和/或大量的IP碎片重组失败。例如，运行以下命令： % /usr/bin/netstat -s | /usr/bin/egrep 'ReasmDuplicates|ReasmFails' 可能显示很高的ipv6ReasmDuplicates和ipv6ReasmFails计数器值。 此外，单处理器的Solaris...
CVE-2007-1497
CVE-2007-1497 affects the Linux kernel nf_conntrack netfilter code prior to 2.6.20.3. During IPv6 fragment reassembly, nfctinfo is not set, leaving the default IP_CT_ESTABLISHED and potentially allowing remote attackers to bypass certain netfilter rulesusing IPv6 fragments. The documented fix is ...
USN-416-1: Linux kernel vulnerabilities
Mark Dowd discovered that the netfilter iptables module did not correcly handle fragmented IPv6 packets. By sending specially crafted packets, a remote attacker could exploit this to bypass firewall rules. This has has already been fixed for Ubuntu 6.10 in USN-395-1; this is the corresponding fix...
DEBIAN-CVE-2007-0086
The Apache HTTP Server, when accessed through a TCP connection with a large window size, allows remote attackers to cause a denial of service network bandwidth consumption via a Range header that specifies multiple copies of the same fragment. NOTE: the severity of this issue has been disputed by...
Important: Red Hat Security Advisory: kernel security update
Updated kernel packages that fix several security issues in the Red Hat Enterprise Linux 4 kernel are now available. This security advisory has been rated as having important security impact by the Red Hat Security Response Team. The Linux kernel handles the basic functions of the operating syste...
security flaw
Linux SCTP lksctp before 2.6.17 allows remote attackers to cause a denial of service infinite recursion and crash via a packet that contains two or more DATA fragments, which causes an skb pointer to refer back to itself when the full message is reassembled, leading to infinite recursion in the...
CVE-2006-2274
Linux SCTP lksctp before 2.6.17 allows remote attackers to cause a denial of service infinite recursion and crash via a packet that contains two or more DATA fragments, which causes an skb pointer to refer back to itself when the full message is reassembled, leading to infinite recursion in the...
FreeBSD Security Advisory FreeBSD-SA-06:07.pf
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ============================================================================= FreeBSD-SA-06:07.pf Security Advisory The FreeBSD Project Topic: IP fragment handling panic in pf4 Category: contrib Module: syscontrib Announced: 2006-01-25 Credits: Jakob...
Null pointer dereference
The ipfw firewall in FreeBSD 6.0-RELEASE allows remote attackers to cause a denial of service firewall crash via ICMP IP fragments that match a reset, reject or unreach action, which leads to an access of an uninitialized pointer...
CVE-2006-0054
The ipfw firewall in FreeBSD 6.0-RELEASE allows remote attackers to cause a denial of service firewall crash via ICMP IP fragments that match a reset, reject or unreach action, which leads to an access of an uninitialized pointer...
CVE-2006-0054
The ipfw firewall in FreeBSD 6.0-RELEASE allows remote attackers to cause a denial of service firewall crash via ICMP IP fragments that match a reset, reject or unreach action, which leads to an access of an uninitialized pointer...
ipfw -- IP fragment denial of service
Problem description: The firewall maintains a pointer to layer 4 header information in the event that it needs to send a TCP reset or ICMP error message to discard packets. Due to incorrect handling of IP fragments, this pointer fails to get initialized. Impact: An attacker can cause the firewall...
CVE-2005-4316
HP-UX B.11.00, B.11.04, B.11.11, and B.11.23 allows remote attackers to cause a denial of service via a "Rose Attack" that involves sending a subset of small IP fragments that do not form a complete, larger packet...
security flaw
Netfilter in the Linux kernel 2.6.8.1 allows local users to cause a denial of service memory consumption via certain packet fragments that are reassembled twice, which causes a data structure to be allocated twice...