CVE-2009-2872: Medium severity cisco ios vulnerability

Published Sep 28, 2009
·
Updated

Cisco IOS 12.0 through 12.4, when IP-based tunnels and the Cisco Express Forwarding feature are enabled, allows remote attackers to cause a denial of service (device reload) via a malformed packet that is not properly handled during switching from one tunnel to a second tunnel, aka Bug IDs CSCsh97579 and CSCsq31776.

Affected Software

288 affected components
Cisco IOS=12.3ym
Cisco IOS=12.1xg
Cisco IOS=12.0xc
Cisco IOS=12.3yq
Cisco IOS=12.3xr
Cisco IOS=12.0xk
Cisco IOS=12.4t
Cisco IOS=12.0xr
Cisco IOS=12.1xm
Cisco IOS=12.1xi
Cisco IOS=12.2sga
Cisco IOS=12.3bc
Cisco IOS=12.0st
Cisco IOS=12.2xr
Cisco IOS=12.1e
Cisco IOS=12.1xc
Cisco IOS=12.1xp
Cisco IOS=12.2cz
Cisco IOS=12.4xq
Cisco IOS=12.1ya
Cisco IOS=12.2sxf
Cisco IOS=12.1yd
Cisco IOS=12.0dc
Cisco IOS=12.0xq
Cisco IOS=12.2irc
Cisco IOS=12.1xs
Cisco IOS=12.2scb
Cisco IOS=12.0xe
Cisco IOS=12.2ja
Cisco IOS=12.2sx
Cisco IOS=12.3xg
Cisco IOS=12.4xj
Cisco IOS=12.2zp
Cisco IOS=12.3bw
Cisco IOS=12.1xy
Cisco IOS=12.3xd
Cisco IOS=12.4xl
Cisco IOS=12.2bz
Cisco IOS=12.4xm
Cisco IOS=12.0xd
Cisco IOS=12.2xj
Cisco IOS=12.2srb
Cisco IOS=12.2su
Cisco IOS=12.1xz
Cisco IOS=12.2xh
Cisco IOS=12.2xg
Cisco IOS=12.2ew
Cisco IOS=12.0xj
Cisco IOS=12.2b
Cisco IOS=12.2ixb
Cisco IOS=12.2sea
Cisco IOS=12.4xt
Cisco IOS=12.2sq
Cisco IOS=12.1t
Cisco IOS=12.1eo
Cisco IOS=12.3xi
Cisco IOS=12.1xr
Cisco IOS=12.2yn
Cisco IOS=12.2sxa
Cisco IOS=12.1db
Cisco IOS=12.2zx
Cisco IOS=12.2seg
Cisco IOS=12.3yj
Cisco IOS=12.2xb
Cisco IOS=12.2sg
Cisco IOS=12.2ixf
Cisco IOS=12.4jdd
Cisco IOS=12.1xe
Cisco IOS=12.3jec
Cisco IOS=12.2xl
Cisco IOS=12.2ym
Cisco IOS=12.2yw
Cisco IOS=12.3yu
Cisco IOS=12.2yd
Cisco IOS=12.3xj
Cisco IOS=12.0xl
Cisco IOS=12.2ste
Cisco IOS=12.3t
Cisco IOS=12.2yb
Cisco IOS=12.3
Cisco IOS=12.2mb
Cisco IOS=12.2dd
Cisco IOS=12.1eu
Cisco IOS=12.1xb
Cisco IOS=12.2zh
Cisco IOS=12.2da
Cisco IOS=12.1ga
Cisco IOS=12.1yf
Cisco IOS=12.2zu
Cisco IOS=12.2yv
Cisco IOS=12.1xl
Cisco IOS=12.2ixa
Cisco IOS=12.1ax
Cisco IOS=12.2sxb
Cisco IOS=12.2yo
Cisco IOS=12.2sca
Cisco IOS=12.4xf
Cisco IOS=12.3va
Cisco IOS=12.2t
Cisco IOS=12.2zc
Cisco IOS=12.0xb
Cisco IOS=12.2sv
Cisco IOS=12.2seb
Cisco IOS=12.3xz
Cisco IOS=12.2yt
Cisco IOS=12.4jx
Cisco IOS=12.2zya
Cisco IOS=12.0xh
Cisco IOS=12.0t
Cisco IOS=12.1xw
Cisco IOS=12.4xg
Cisco IOS=12.4ya
Cisco IOS=12.2yl
Cisco IOS=12.2sed
Cisco IOS=12.2za
Cisco IOS=12.2ye
Cisco IOS=12.1yb
Cisco IOS=12.2ez
Cisco IOS=12.4xv
Cisco IOS=12.3yd
Cisco IOS=12.4xw
Cisco IOS=12.1eb
Cisco IOS=12.2zb
Cisco IOS=12.2yg
Cisco IOS=12.2sva
Cisco IOS=12.2ex
Cisco IOS=12.1dc
Cisco IOS=12.2svd
Cisco IOS=12.1gb
Cisco IOS=12.2xu
Cisco IOS=12.4xz
Cisco IOS=12.2sbc
Cisco IOS=12.2ixc
Cisco IOS=12.1ex
Cisco IOS=12.1yi
Cisco IOS=12.2ira
Cisco IOS=12.3xf
Cisco IOS=12.3xl
Cisco IOS=12.2yr
Cisco IOS=12.2se
Cisco IOS=12.1
Cisco IOS=12.0sl
Cisco IOS=12.1yh
Cisco IOS=12.3yk
Cisco IOS=12.0db
Cisco IOS=12.2sxh
Cisco IOS=12.3yf
Cisco IOS=12.4xd
Cisco IOS=12.0sz
Cisco IOS=12.2sec
Cisco IOS=12.4xp
Cisco IOS=12.4yd
Cisco IOS=12.1ec
Cisco IOS=12.1cx
Cisco IOS=12.2sb
Cisco IOS=12.4jda
Cisco IOS=12.2xm
Cisco IOS=12.3yt
Cisco IOS=12.2sy
Cisco IOS=12.2xk
Cisco IOS=12.1xh
Cisco IOS=12.3xb
Cisco IOS=12.2ixg
Cisco IOS=12.2zj
Cisco IOS=12.0xa
Cisco IOS=12.4mda
Cisco IOS=12.3yz
Cisco IOS=12.4xk
Cisco IOS=12.1xu
Cisco IOS=12.0sc
Cisco IOS=12.2ixh
Cisco IOS=12.0sy
Cisco IOS=12.3jl
Cisco IOS=12.2jk
Cisco IOS=12.3yg
Cisco IOS=12.1xj
Cisco IOS=12.3xu
Cisco IOS=12.2zd
Cisco IOS=12.3xy
Cisco IOS=12.2cy
Cisco IOS=12.3xc
Cisco IOS=12.4jk
Cisco IOS=12.4
Cisco IOS=12.2so
Cisco IOS=12.1aa
Cisco IOS=12.2tpc
Cisco IOS=12.0xn
Cisco IOS=12.2xc
Cisco IOS=12.2ewa
Cisco IOS=12.4jl
Cisco IOS=12.2bc
Cisco IOS=12.0da
Cisco IOS=12.1xx
Cisco IOS=12.4sw
Cisco IOS=12.2srd
Cisco IOS=12.0sp
Cisco IOS=12.2yc
Cisco IOS=12.3jea
Cisco IOS=12.3tpc
Cisco IOS=12.3ja
Cisco IOS=12.2xs
Cisco IOS=12.2bw
Cisco IOS=12.4xa
Cisco IOS=12.2yy
Cisco IOS=12.2sz
Cisco IOS=12.2xi
Cisco IOS=12.0w
Cisco IOS=12.4xn
Cisco IOS=12.0wc
Cisco IOS=12.1ey
Cisco IOS=12.2yu
Cisco IOS=12.2sxi
Cisco IOS=12.0xm
Cisco IOS=12.4xe
Cisco IOS=12.3yx
Cisco IOS=12.1xd
Cisco IOS=12.2dx
Cisco IOS=12.1ez
Cisco IOS=12.2ixd
Cisco IOS=12.2xd
Cisco IOS=12.2bx
Cisco IOS=12.3xq
Cisco IOS=12.2cx
Cisco IOS=12.2zl
Cisco IOS=12.4md
Cisco IOS=12.4jdc
Cisco IOS=12.2yq
Cisco IOS=12.1xq
Cisco IOS=12.0s
Cisco IOS=12.2xf
Cisco IOS=12.0xt
Cisco IOS=12.1ay
Cisco IOS=12.2xq
Cisco IOS=12.2sef
Cisco IOS=12.2see
Cisco IOS=12.3ys
Cisco IOS=12.3jk
Cisco IOS=12.1ea
Cisco IOS=12.2zf
Cisco IOS=12.3b
Cisco IOS=12.4yb
Cisco IOS=12.2sra
Cisco IOS=12.2irb
Cisco IOS=12.3jeb
Cisco IOS=12.2sm
Cisco IOS=12.1xf
Cisco IOS=12.2ya
Cisco IOS=12.1ew
Cisco IOS=12.4xb
Cisco IOS=12.1da
Cisco IOS=12.4ja
Cisco IOS=12.2xv
Cisco IOS=12.2
Cisco IOS=12.1xa
Cisco IOS=12.0xg
Cisco IOS=12.2zg
Cisco IOS=12.3xx
Cisco IOS=12.0
Cisco IOS=12.1yc
Cisco IOS=12.4xy
Cisco IOS=12.4xr
Cisco IOS=12.4xc
Cisco IOS=12.3xa
Cisco IOS=12.3yi
Cisco IOS=12.0xv
Cisco IOS=12.2yk
Cisco IOS=12.2sxd
Cisco IOS=12.2src
Cisco IOS=12.2xa
Cisco IOS=12.1xt
Cisco IOS=12.0sx
Cisco IOS=12.4ye
Cisco IOS=12.2ixe
Cisco IOS=12.0xi
Cisco IOS=12.1ye
Cisco IOS=12.3xk
Cisco IOS=12.1xv
Cisco IOS=12.2yj
Cisco IOS=12.2sve
Cisco IOS=12.2mc
Cisco IOS=12.2yx
Cisco IOS=12.2xo
Cisco IOS=12.2sxe
Cisco IOS=12.2by
Cisco IOS=12.2s
Cisco IOS=12.2fz
Cisco IOS=12.2xt
Cisco IOS=12.4jma

Event History

Sep 28, 2009
CVE Published
via MITRE·06:20 PM
Data Sourced
via MITRE·06:20 PM
Description

Frequently Asked Questions

1

What is the severity of CVE-2009-2872?

CVE-2009-2872 has a severity rating of high due to its potential to cause denial of service through device reload.

2

How do I fix CVE-2009-2872?

To fix CVE-2009-2872, upgrade to a patched version of Cisco IOS that addresses this vulnerability.

3

What versions of Cisco IOS are affected by CVE-2009-2872?

CVE-2009-2872 affects Cisco IOS versions 12.0 through 12.4.

4

What type of attack can exploit CVE-2009-2872?

CVE-2009-2872 can be exploited by sending a malformed packet that disrupts the switching process.

5

Is there a workaround for CVE-2009-2872?

The recommended workaround for CVE-2009-2872 is to disable IP-based tunnels if possible until the vulnerability is patched.

Company

Resources

Contact

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