var-201309-0036
Vulnerability from variot
The regex engine in the BGP implementation in Cisco NX-OS, when a complex regular expression is configured for inbound routes, allows remote attackers to cause a denial of service (device reload) via a crafted AS path set, aka Bug ID CSCuf49554. ( Device reload ) There are vulnerabilities that are put into a state. Cisco NX-OS software is a data center-level operating system that reflects modular design, resiliency, and maintainability. A BGP code implementation in Cisco NX-OS Software has a security vulnerability that allows unauthenticated remote attackers to overload affected devices. The vulnerability can be triggered if the affected device has a complex regular expression applied to the inbound route, and the vulnerability can be successfully triggered to trigger a Cisco NX-OS Software reboot. Cisco NX-OS is prone to a denial-of-service vulnerability. An attacker can exploit this issue to cause the affected device to reload, denying service to legitimate users. This issue is being tracked by Cisco bug ID CSCuf49554. Cisco NX-OS is a data center-oriented operating system developed by Cisco. The vulnerability stems from an error in the regular expression engine's handling of complex regular expressions
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.