All posts by 007admin

Cisco Security Advisory 20140924-nat

Cisco Security Advisory – A vulnerability in the Network Address Translation (NAT) feature of Cisco IOS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper translation of IP version 4 (IPv4) packets. Cisco has released free software updates that address this vulnerability.

Perl 5.20.1 Deep Recursion Stack Overflow

A stack overflow was discovered when serializing data via the Data::Dumper extension which is part of Perl-Core. By using the “Dumper” method on a large Array-Reference which recursively contains other Array-References, it is possible to cause many recursive calls to the DD_dump native function and ultimately exhaust all available stack memory.

Cisco Security Advisory 20140924-dhcpv6

Cisco Security Advisory – A vulnerability in the DHCP version 6 (DHCPv6) server implementation of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to improper parsing of malformed DHCPv6 packets. An attacker could exploit this vulnerability by sending malformed DHCPv6 packets to be processed by an affected device. An exploit could allow the attacker to cause a memory leak and eventual reload of an affected device.

Cisco Security Advisory 20140924-sip

Cisco Security Advisory – A vulnerability in the Session Initiation Protocol (SIP) implementation in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a reload of an affected device. To exploit this vulnerability, affected devices must be configured to process SIP messages. Cisco has released free software updates that address this vulnerability. There are no workarounds for devices that must run SIP; however, mitigations are available to limit exposure to this vulnerability.

Cisco Security Advisory 20140924-mdns

Cisco Security Advisory – The Cisco IOS Software implementation of the multicast Domain Name System (mDNS) feature contains multiple vulnerabilities when processing mDNS packets that could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition.

Cisco Security Advisory 20140924-metadata

Cisco Security Advisory – Two vulnerabilities in the metadata flow feature of Cisco IOS Software could allow an unauthenticated, remote attacker to reload a vulnerable device. The vulnerabilities are due to improper handling of transit RSVP packets that need to be processed by the metadata infrastructure. An attacker could exploit these vulnerabilities by sending malformed RSVP packets to an affected device. A successful exploit could allow the attacker to cause an extended denial of service (DoS) condition. Cisco has released free software updates that address these vulnerabilities. Workarounds that mitigate these vulnerabilities are not available.

Cisco Security Advisory 20140924-rsvp

Cisco Security Advisory – A vulnerability in the implementation of the Resource Reservation Protocol (RSVP) in Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker cause the device to reload. This vulnerability could be exploited repeatedly to ca use an extended denial of service (DoS) condition. Cisco has released free software updates that address this vulnerability.