First published: Fri Aug 21 2009(Updated: )
Cisco IOS XR 3.8.1 and earlier allows remote attackers to cause a denial of service (process crash) via a long BGP UPDATE message, as demonstrated by a message with many AS numbers in the AS Path Attribute.
Credit: ykramarz@cisco.com
Affected Software | Affected Version | How to fix |
---|---|---|
Cisco IOS XRv 9000 | =3.6.1 | |
Cisco IOS XRv 9000 | =3.6.2 | |
Cisco IOS XRv 9000 | =3.4.0 | |
Cisco IOS XRv 9000 | =3.5.2 | |
Cisco IOS XRv 9000 | =3.5 | |
Cisco IOS XRv 9000 | =3.4.2 | |
Cisco IOS XRv 9000 | =3.7.2 | |
Cisco IOS XRv 9000 | =3.4 | |
Cisco IOS XRv 9000 | =3.4.1 | |
Cisco IOS XRv 9000 | =3.7.0 | |
Cisco IOS XRv 9000 | =3.4.3 | |
Cisco IOS XRv 9000 | <=3.8.1 | |
Cisco IOS XRv 9000 | =3.6.0 | |
Cisco IOS XRv 9000 | =3.7.1 | |
Cisco IOS XRv 9000 | =3.5.3 | |
Cisco IOS XRv 9000 | =3.7.3 | |
Cisco IOS XRv 9000 | =3.6.3 | |
Cisco IOS XRv 9000 | =3.8.0 | |
Cisco IOS XRv 9000 | =3.5.4 |
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The severity of CVE-2009-1154 is considered high due to its potential impact on availability.
To fix CVE-2009-1154, upgrade Cisco IOS XR to version 3.8.2 or later to prevent the denial of service.
CVE-2009-1154 affects multiple versions of Cisco IOS XR, specifically versions up to and including 3.8.1.
CVE-2009-1154 is a denial of service vulnerability resulting from improperly handling long BGP UPDATE messages.
Yes, CVE-2009-1154 can be exploited remotely by sending specially crafted BGP UPDATE messages.