CVE-2011-3277: High severity Cisco IOS XE vulnerability
Published Oct 3, 2011
·Updated
Unspecified vulnerability in the NAT implementation in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xSG, allows remote attackers to cause a denial of service (device reload) by sending crafted H.323 packets to TCP port 1720, aka Bug ID CSCth11006.
Affected Software
189 affected components
Cisco IOS XE=3.1.0sg
Cisco IOS XE=3.1.1sg
cisco IOS=12.1
cisco IOS=12.1e
cisco IOS=12.2
cisco IOS=12.2b
cisco IOS=12.2bc
cisco IOS=12.2bx
cisco IOS=12.2cx
cisco IOS=12.2cz
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=12.2irc
cisco IOS=12.2ird
cisco IOS=12.2ire
cisco IOS=12.2irf
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=12.2ixh
cisco IOS=12.2mc
cisco IOS=12.2mra
cisco IOS=12.2mrb
cisco IOS=12.2s
cisco IOS=12.2sb
cisco IOS=12.2sbc
cisco IOS=12.2sca
cisco IOS=12.2scb
cisco IOS=12.2scc
cisco IOS=12.2scd
cisco IOS=12.2sce
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=12.2sq
cisco IOS=12.2sra
cisco IOS=12.2srb
cisco IOS=12.2src
cisco IOS=12.2srd
cisco IOS=12.2sre
cisco IOS=12.2su
cisco IOS=12.2sv
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=12.2sxj
cisco IOS=12.2sy
cisco IOS=12.2sz
cisco IOS=12.2t
cisco IOS=12.2tpc
cisco IOS=12.2xb
cisco IOS=12.2xna
cisco IOS=12.2xnb
cisco IOS=12.2xnc
cisco IOS=12.2xne
cisco IOS=12.2xnf
cisco IOS=12.2xo
cisco IOS=12.2ya
cisco IOS=12.2yf
cisco IOS=12.2yg
cisco IOS=12.2yh
cisco IOS=12.2yj
cisco IOS=12.2yl
cisco IOS=12.2ym
cisco IOS=12.2yn
cisco IOS=12.2yq
cisco IOS=12.2yr
cisco IOS=12.2ys
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=12.2ze
cisco IOS=12.2zf
cisco IOS=12.2zh
cisco IOS=12.2zl
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=12.3jk
cisco IOS=12.3t
cisco IOS=12.3tpc
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=12.3xz
cisco IOS=12.3ya
cisco IOS=12.3yj
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=12.3za
cisco IOS=12.4
cisco IOS=12.4gc
cisco IOS=12.4jx
cisco IOS=12.4md
cisco IOS=12.4mda
cisco IOS=12.4mdb
cisco IOS=12.4mr
cisco IOS=12.4mra
cisco IOS=12.4mrb
cisco IOS=12.4t
cisco IOS=12.4xa
cisco IOS=12.4xb
cisco IOS=12.4xd
cisco IOS=12.4xf
cisco IOS=12.4xg
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=12.4xw
cisco IOS=12.4xy
cisco IOS=12.4xz
cisco IOS=12.4ya
cisco IOS=12.4yb
cisco IOS=12.4yd
cisco IOS=12.4ye
cisco IOS=12.4yg
cisco IOS=15.0m
cisco IOS=15.0mr
cisco IOS=15.0mra
cisco IOS=15.0s
cisco IOS=15.0sa
cisco IOS=15.0sg
cisco IOS=15.0xa
cisco IOS=15.0xo
cisco IOS=15.1ey
cisco IOS=15.1gc
cisco IOS=15.1m
cisco IOS=15.1s
cisco IOS=15.1t
cisco IOS=15.1xb
Event History
Oct 3, 2011
CVE Published
via MITRE·11:00 PM
Data Sourced
via MITRE·11:00 PM
Description
Frequently Asked Questions
1
What is the severity of CVE-2011-3277?
CVE-2011-3277 is classified as a denial-of-service vulnerability affecting Cisco IOS and IOS XE.
2
How do I fix CVE-2011-3277?
To mitigate CVE-2011-3277, ensure that your Cisco IOS or IOS XE software is updated to a version that includes the relevant security patches.
3
Which versions of Cisco IOS are affected by CVE-2011-3277?
CVE-2011-3277 affects Cisco IOS versions 12.1 through 12.4 and 15.0 through 15.1, as well as IOS XE 3.1.xSG.
4
Is there a workaround for CVE-2011-3277?
Disabling H.323 or blocking TCP port 1720 can serve as a temporary workaround to mitigate the vulnerability in CVE-2011-3277.
5
Can CVE-2011-3277 lead to device exploitation?
Yes, CVE-2011-3277 allows remote attackers to exploit the vulnerability by sending crafted packets, potentially leading to device reloads.