CVE-2017-3224
CVSS V2 Medium 4.3
CVSS V3 High 8.2
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).
Overview
- CVE ID
- CVE-2017-3224
- Assigner
- cret@cert.org
- Vulnerability Status
- Modified
- Published Version
- 2018-07-24T15:29:00
- Last Modified Date
- 2019-10-09T23:27:25
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:quagga:quagga:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:suse:opensuse:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:o:suse:suse_linux:-:*:*:*:*:*:*:* | 1 | OR | ||
| cpe:2.3:a:redhat:package_manager:-:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:A/AC:M/Au:N/C:N/I:P/A:P
- Access Vector
- ADJACENT_NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- NONE
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 4.3
- Severity
- MEDIUM
- Exploitability Score
- 5.5
- Impact Score
- 4.9
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:H
- Attack Vector
- ADJACENT_NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- CHANGED
- Confidentiality Impact
- LOW
- Availability Impact
- HIGH
- Base Score
- 8.2
- Base Severity
- HIGH
- Exploitability Score
- 1.6
- Impact Score
- 6
References
| Reference URL | Reference Tags |
|---|---|
| https://www.kb.cert.org/vuls/id/793496 | Third Party Advisory US Government Resource |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2017-3224 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-3224 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 17:09:15 | Added to TrackCVE | |||
| 2022-12-03 10:27:52 | cert@cert.org | cret@cert.org | CVE Assigner | updated |
| 2022-12-03 10:27:52 | 2018-07-24T15:29Z | 2018-07-24T15:29:00 | CVE Published Date | updated |
| 2022-12-03 10:27:52 | 2019-10-09T23:27:25 | CVE Modified Date | updated | |
| 2022-12-03 10:27:52 | Modified | Vulnerability Status | updated |