Upstream information

CVE-2017-3224 at MITRE

Description

Open Shortest Path First (OSPF) protocol implementations may improperly determine Link State Advertisement (LSA) recency for LSAs with MaxSequenceNumber. According to RFC 2328 section 13.1, for two instances of the same LSA, recency is determined by first comparing sequence numbers, then checksums, and finally MaxAge. In a case where the sequence numbers are the same, the LSA with the larger checksum is considered more recent, and will not be flushed from the Link State Database (LSDB). Since the RFC does not explicitly state that the values of links carried by a LSA must be the same when prematurely aging a self-originating LSA with MaxSequenceNumber, it is possible in vulnerable OSPF implementations for an attacker to craft a LSA with MaxSequenceNumber and invalid links that will result in a larger checksum and thus a 'newer' LSA that will not be flushed from the LSDB. Propagation of the crafted LSA can result in the erasure or alteration of the routing tables of routers within the routing domain, creating a denial of service condition or the re-routing of traffic on the network. CVE-2017-3224 has been reserved for Quagga and downstream implementations (SUSE, openSUSE, and Red Hat packages).

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having moderate severity.

CVSS v2 Scores
  National Vulnerability Database SUSE
Base Score 4.3 5.1
Vector AV:A/AC:M/Au:N/C:N/I:P/A:P AV:N/AC:H/Au:N/C:P/I:P/A:P
Access Vector Adjacent Network Network
Access Complexity Medium High
Authentication None None
Confidentiality Impact None Partial
Integrity Impact Partial Partial
Availability Impact Partial Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 8.2 7
Vector CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:H
Access Vector Adjacent Network Network
Access Complexity High High
Privileges Required None None
User Interaction None None
Scope Changed Unchanged
Confidentiality Impact Low Low
Integrity Impact High Low
Availability Impact High High
CVSSv3 Version 3 3
SUSE Bugzilla entry: 1039315 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE CaaS Platform 4.5 quagga Affected
SUSE Enterprise Storage 7 quagga Affected
SUSE Linux Enterprise Desktop 11 SP4 quagga Affected
SUSE Linux Enterprise Desktop 12 SP1 quagga Affected
SUSE Linux Enterprise Desktop 12 SP2 quagga Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS quagga Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 ESPOS quagga Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 LTSS quagga Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 quagga Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 quagga Affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 quagga Affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 quagga Affected
SUSE Linux Enterprise Real Time 15 SP2 quagga Affected
SUSE Linux Enterprise Server 11 SP1 quagga Affected
SUSE Linux Enterprise Server 11 SP3 quagga Affected
SUSE Linux Enterprise Server 11 SP3 LTSS quagga Affected
SUSE Linux Enterprise Server 11 SP4 quagga Affected
SUSE Linux Enterprise Server 11 SP4 LTSS quagga Affected
SUSE Linux Enterprise Server 12 LTSS quagga Unsupported
SUSE Linux Enterprise Server 12 SP1 quagga Affected
SUSE Linux Enterprise Server 12 SP2 quagga Affected
SUSE Linux Enterprise Server 12 SP2 BCL quagga Affected
SUSE Linux Enterprise Server 12 SP3 BCL quagga Affected
SUSE Linux Enterprise Server 12 SP4 LTSS quagga Affected
SUSE Linux Enterprise Server 15 SP2 LTSS quagga Affected
SUSE Linux Enterprise Server 15 SP3 quagga Affected
SUSE Linux Enterprise Server 15 SP4 quagga Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 quagga Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP2 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 11 SP4 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP2 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 quagga Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 quagga Affected
SUSE Linux Enterprise Software Development Kit 11 SP4 quagga Affected
SUSE Linux Enterprise Software Development Kit 12 SP1 quagga Affected
SUSE Linux Enterprise Software Development Kit 12 SP2 quagga Affected
SUSE Linux Enterprise Storage 7.1 quagga Affected
SUSE Manager Proxy 4.1 quagga Affected
SUSE Manager Proxy 4.2 quagga Affected
SUSE Manager Proxy 4.3 quagga Affected
SUSE Manager Retail Branch Server 4.1 quagga Affected
SUSE Manager Retail Branch Server 4.2 quagga Affected
SUSE Manager Retail Branch Server 4.3 quagga Affected
SUSE Manager Server 4.1 quagga Affected
SUSE Manager Server 4.2 quagga Affected
SUSE Manager Server 4.3 quagga Affected