CVE-2009-0636: High severity Cisco IOS vulnerability

Published Mar 27, 2009
·
Updated

Unspecified vulnerability in Cisco IOS 12.0 through 12.4, when SIP voice services are enabled, allows remote attackers to cause a denial of service (device crash) via a valid SIP message.

Affected Software

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

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Configuration

    Disable SIP voice services on affected Cisco IOS devices (the vulnerability occurs when SIP voice services are enabled).

    Cisco IOS SIP voice services = disabled

Event History

Mar 27, 2009
CVE Published
via MITRE·04:00 PM
Data Sourced
via MITRE·04:00 PM
Description
Data Sourced
via NVD·04:30 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is the severity of CVE-2009-0636?

CVE-2009-0636 is considered to have a high severity level due to the risk of a denial of service attack that can crash Cisco devices.

2

How do I fix CVE-2009-0636?

To fix CVE-2009-0636, upgrade the affected Cisco IOS versions to a patched version that addresses the vulnerability.

3

Which Cisco IOS versions are affected by CVE-2009-0636?

CVE-2009-0636 affects Cisco IOS versions from 12.0 through 12.4 when SIP voice services are enabled.

4

Can CVE-2009-0636 be exploited remotely?

Yes, CVE-2009-0636 can be exploited remotely by sending a valid SIP message to the affected device.

5

What types of devices are impacted by CVE-2009-0636?

Devices running affected versions of Cisco IOS with SIP voice services enabled are susceptible to CVE-2009-0636.

Company

Resources

Contact

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