SB2013101009 - Gentoo update for Quagga
Published: October 10, 2013 Updated: September 25, 2016
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2012-0249)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Buffer overflow in the ospf_ls_upd_list_lsa function in ospf_packet.c in the OSPFv2 implementation in ospfd in Quagga before 0.99.20.1 allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a Link State Update (aka LS Update) packet that is smaller than the length specified in its header.
2) Buffer overflow (CVE-ID: CVE-2012-0250)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
Buffer overflow in the OSPFv2 implementation in ospfd in Quagga before 0.99.20.1 allows remote attackers to cause a denial of service (daemon crash) via a Link State Update (aka LS Update) packet containing a network-LSA link-state advertisement for which the data-structure length is smaller than the value in the Length header field.
3) Buffer overflow (CVE-ID: CVE-2012-0255)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The BGP implementation in bgpd in Quagga before 0.99.20.1 does not properly use message buffers for OPEN messages, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) via a message associated with a malformed Four-octet AS Number Capability (aka AS4 capability).
4) Input validation error (CVE-ID: CVE-2012-1820)
The vulnerability allows a remote non-authenticated attacker to perform service disruption.
The bgp_capability_orf function in bgpd in Quagga 0.99.20.1 and earlier allows remote attackers to cause a denial of service (assertion failure and daemon exit) by leveraging a BGP peering relationship and sending a malformed Outbound Route Filtering (ORF) capability TLV in an OPEN message.
5) Stack-based buffer overflow (CVE-ID: CVE-2013-2236)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the new_msg_lsa_change_notify function in the OSPFD API (ospf_api.c) when processing a large LSA. A remote unauthenticated attacker can trigger stack-based buffer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
Remediation
Install update from vendor's website.