ID |
CVE-2015-4203
|
Summary |
Race condition in Cisco IOS 12.2SCH in the Performance Routing Engine (PRE) module on uBR10000 devices, when NetFlow and an MPLS IPv6 VPN are configured, allows remote attackers to cause a denial of service (PXF process crash) by sending malformed MPLS 6VPE packets quickly, aka Bug ID CSCud83396. |
References |
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Vulnerable Configurations |
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cpe:2.3:o:cisco:ios:12.2\(33\)sch:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2\(33\)sch:*:*:*:*:*:*:*
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cpe:2.3:o:cisco:ios:12.2sch:*:*:*:*:*:*:*
cpe:2.3:o:cisco:ios:12.2sch:*:*:*:*:*:*:*
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cpe:2.3:h:cisco:ubr10000_cable_modem_termination_system:-:*:*:*:*:*:*:*
cpe:2.3:h:cisco:ubr10000_cable_modem_termination_system:-:*:*:*:*:*:*:*
|
CVSS |
Base: | 5.4 (as of 28-12-2016 - 18:01) |
Impact: | |
Exploitability: | |
|
CWE |
CWE-362 |
CAPEC |
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Leveraging Race Conditions
The adversary targets a race condition occurring when multiple processes access and manipulate the same resource concurrently, and the outcome of the execution depends on the particular order in which the access takes place. The adversary can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance, a race condition can occur while accessing a file: the adversary can trick the system by replacing the original file with his version and cause the system to read the malicious file.
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Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions
This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. A typical example is file access. The adversary can leverage a file access race condition by "running the race", meaning that they would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the adversary could replace or modify the file, causing the application to behave unexpectedly.
|
Access |
Vector | Complexity | Authentication |
NETWORK |
HIGH |
NONE |
|
Impact |
Confidentiality | Integrity | Availability |
NONE |
NONE |
COMPLETE |
|
cvss-vector
via4
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AV:N/AC:H/Au:N/C:N/I:N/A:C
|
refmap
via4
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bid | 75339 | cisco | 20150622 Cisco IOS Software UBR Devices IPv6 VPN Multiprotocol Label Switching Denial of Service Vulnerability | sectrack | 1032692 |
|
Last major update |
28-12-2016 - 18:01 |
Published |
23-06-2015 - 14:59 |
Last modified |
28-12-2016 - 18:01 |