Cisco IOS 12.0 through 12.3YL, with BGP enabled and running the bgp log-neighbor-changes command, allows remote attackers to cause a denial of service (device reload) via a malformed BGP packet.
| Software | From | Fixed in |
|---|---|---|
| cisco / ios | 12.0 | 12.0.x |
| cisco / ios | 12.0da | 12.0da.x |
| cisco / ios | 12.0db | 12.0db.x |
| cisco / ios | 12.0dc | 12.0dc.x |
| cisco / ios | 12.0s | 12.0s.x |
| cisco / ios | 12.0sc | 12.0sc.x |
| cisco / ios | 12.0sp | 12.0sp.x |
| cisco / ios | 12.0st | 12.0st.x |
| cisco / ios | 12.0sx | 12.0sx.x |
| cisco / ios | 12.0sy | 12.0sy.x |
| cisco / ios | 12.0sz | 12.0sz.x |
| cisco / ios | 12.0w5 | 12.0w5.x |
| cisco / ios | 12.0wc | 12.0wc.x |
| cisco / ios | 12.0wt | 12.0wt.x |
| cisco / ios | 12.0wx | 12.0wx.x |
| cisco / ios | 12.0xa | 12.0xa.x |
| cisco / ios | 12.0xb | 12.0xb.x |
| cisco / ios | 12.0xc | 12.0xc.x |
| cisco / ios | 12.0xd | 12.0xd.x |
| cisco / ios | 12.0xe | 12.0xe.x |
| cisco / ios | 12.0xf | 12.0xf.x |
| cisco / ios | 12.0xg | 12.0xg.x |
| cisco / ios | 12.0xh | 12.0xh.x |
| cisco / ios | 12.0xi | 12.0xi.x |
| cisco / ios | 12.0xj | 12.0xj.x |
| cisco / ios | 12.0xk | 12.0xk.x |
| cisco / ios | 12.0xl | 12.0xl.x |
| cisco / ios | 12.0xm | 12.0xm.x |
| cisco / ios | 12.0xn | 12.0xn.x |
| cisco / ios | 12.0xp | 12.0xp.x |
| cisco / ios | 12.0xq | 12.0xq.x |
| cisco / ios | 12.0xr | 12.0xr.x |
| cisco / ios | 12.0xs | 12.0xs.x |
| cisco / ios | 12.0xt | 12.0xt.x |
| cisco / ios | 12.0xu | 12.0xu.x |
| cisco / ios | 12.0xv | 12.0xv.x |
| cisco / ios | 12.1 | 12.1.x |
| cisco / ios | 12.1aa | 12.1aa.x |
| cisco / ios | 12.1ax | 12.1ax.x |
| cisco / ios | 12.1ay | 12.1ay.x |
| cisco / ios | 12.1az | 12.1az.x |
| cisco / ios | 12.1da | 12.1da.x |
| cisco / ios | 12.1db | 12.1db.x |
| cisco / ios | 12.1dc | 12.1dc.x |
| cisco / ios | 12.1e | 12.1e.x |
| cisco / ios | 12.1ea | 12.1ea.x |
| cisco / ios | 12.1ec | 12.1ec.x |
| cisco / ios | 12.1eo | 12.1eo.x |
| cisco / ios | 12.1ev | 12.1ev.x |
| cisco / ios | 12.1ew | 12.1ew.x |
| cisco / ios | 12.1ex | 12.1ex.x |
| cisco / ios | 12.1ey | 12.1ey.x |
| cisco / ios | 12.1t | 12.1t.x |
| cisco / ios | 12.1xa | 12.1xa.x |
| cisco / ios | 12.1xb | 12.1xb.x |
| cisco / ios | 12.1xc | 12.1xc.x |
| cisco / ios | 12.1xd | 12.1xd.x |
| cisco / ios | 12.1xe | 12.1xe.x |
| cisco / ios | 12.1xf | 12.1xf.x |
| cisco / ios | 12.1xg | 12.1xg.x |
| cisco / ios | 12.1xh | 12.1xh.x |
| cisco / ios | 12.1xi | 12.1xi.x |
| cisco / ios | 12.1xj | 12.1xj.x |
| cisco / ios | 12.1xl | 12.1xl.x |
| cisco / ios | 12.1xm | 12.1xm.x |
| cisco / ios | 12.1xp | 12.1xp.x |
| cisco / ios | 12.1xq | 12.1xq.x |
| cisco / ios | 12.1xr | 12.1xr.x |
| cisco / ios | 12.1xt | 12.1xt.x |
| cisco / ios | 12.1xu | 12.1xu.x |
| cisco / ios | 12.1xv | 12.1xv.x |
| cisco / ios | 12.1ya | 12.1ya.x |
| cisco / ios | 12.1yb | 12.1yb.x |
| cisco / ios | 12.1yf | 12.1yf.x |
| cisco / ios | 12.1yh | 12.1yh.x |
| cisco / ios | 12.1yi | 12.1yi.x |
| cisco / ios | 12.1yj | 12.1yj.x |
| cisco / ios | 12.2 | 12.2.x |
| cisco / ios | 12.2b | 12.2b.x |
| cisco / ios | 12.2bc | 12.2bc.x |
| cisco / ios | 12.2bw | 12.2bw.x |
| cisco / ios | 12.2bx | 12.2bx.x |
| cisco / ios | 12.2by | 12.2by.x |
| cisco / ios | 12.2bz | 12.2bz.x |
| cisco / ios | 12.2cz | 12.2cz.x |
| cisco / ios | 12.2da | 12.2da.x |
| cisco / ios | 12.2dd | 12.2dd.x |
| cisco / ios | 12.2dx | 12.2dx.x |
| cisco / ios | 12.2ew | 12.2ew.x |
| cisco / ios | 12.2jk | 12.2jk.x |
| cisco / ios | 12.2mb | 12.2mb.x |
| cisco / ios | 12.2mc | 12.2mc.x |
| cisco / ios | 12.2mx | 12.2mx.x |
| cisco / ios | 12.2s | 12.2s.x |
| cisco / ios | 12.2se | 12.2se.x |
| cisco / ios | 12.2su | 12.2su.x |
| cisco / ios | 12.2sw | 12.2sw.x |
| cisco / ios | 12.2sx | 12.2sx.x |
| cisco / ios | 12.2sxa | 12.2sxa.x |
| cisco / ios | 12.2sxb | 12.2sxb.x |
| cisco / ios | 12.2sxd | 12.2sxd.x |
| cisco / ios | 12.2sy | 12.2sy.x |
| cisco / ios | 12.2sz | 12.2sz.x |
| cisco / ios | 12.2t | 12.2t.x |
| cisco / ios | 12.2x | 12.2x.x |
| cisco / ios | 12.2xa | 12.2xa.x |
| cisco / ios | 12.2xb | 12.2xb.x |
| cisco / ios | 12.2xc | 12.2xc.x |
| cisco / ios | 12.2xd | 12.2xd.x |
| cisco / ios | 12.2xe | 12.2xe.x |
| cisco / ios | 12.2xf | 12.2xf.x |
| cisco / ios | 12.2xg | 12.2xg.x |
| cisco / ios | 12.2xh | 12.2xh.x |
| cisco / ios | 12.2xi | 12.2xi.x |
| cisco / ios | 12.2xj | 12.2xj.x |
| cisco / ios | 12.2xk | 12.2xk.x |
| cisco / ios | 12.2xl | 12.2xl.x |
| cisco / ios | 12.2xm | 12.2xm.x |
| cisco / ios | 12.2xn | 12.2xn.x |
| cisco / ios | 12.2xq | 12.2xq.x |
| cisco / ios | 12.2xs | 12.2xs.x |
| cisco / ios | 12.2xt | 12.2xt.x |
| cisco / ios | 12.2xu | 12.2xu.x |
| cisco / ios | 12.2xw | 12.2xw.x |
| cisco / ios | 12.2xz | 12.2xz.x |
| cisco / ios | 12.2ya | 12.2ya.x |
| cisco / ios | 12.2yb | 12.2yb.x |
| cisco / ios | 12.2yc | 12.2yc.x |
| cisco / ios | 12.2ye | 12.2ye.x |
| cisco / ios | 12.2yf | 12.2yf.x |
| cisco / ios | 12.2yg | 12.2yg.x |
| cisco / ios | 12.2yh | 12.2yh.x |
| cisco / ios | 12.2yj | 12.2yj.x |
| cisco / ios | 12.2yk | 12.2yk.x |
| cisco / ios | 12.2yl | 12.2yl.x |
| cisco / ios | 12.2ym | 12.2ym.x |
| cisco / ios | 12.2yn | 12.2yn.x |
| cisco / ios | 12.2yo | 12.2yo.x |
| cisco / ios | 12.2yp | 12.2yp.x |
| cisco / ios | 12.2yq | 12.2yq.x |
| cisco / ios | 12.2yr | 12.2yr.x |
| cisco / ios | 12.2ys | 12.2ys.x |
| cisco / ios | 12.2yt | 12.2yt.x |
| cisco / ios | 12.2yu | 12.2yu.x |
| cisco / ios | 12.2yv | 12.2yv.x |
| cisco / ios | 12.2yw | 12.2yw.x |
| cisco / ios | 12.2yx | 12.2yx.x |
| cisco / ios | 12.2yy | 12.2yy.x |
| cisco / ios | 12.2yz | 12.2yz.x |
| cisco / ios | 12.2za | 12.2za.x |
| cisco / ios | 12.2zb | 12.2zb.x |
| cisco / ios | 12.2zc | 12.2zc.x |
| cisco / ios | 12.2zd | 12.2zd.x |
| cisco / ios | 12.2ze | 12.2ze.x |
| cisco / ios | 12.2zf | 12.2zf.x |
| cisco / ios | 12.2zg | 12.2zg.x |
| cisco / ios | 12.2zh | 12.2zh.x |
| cisco / ios | 12.2zi | 12.2zi.x |
| cisco / ios | 12.2zj | 12.2zj.x |
| cisco / ios | 12.2zk | 12.2zk.x |
| cisco / ios | 12.2zl | 12.2zl.x |
| cisco / ios | 12.2zm | 12.2zm.x |
| cisco / ios | 12.2zn | 12.2zn.x |
| cisco / ios | 12.2zo | 12.2zo.x |
| cisco / ios | 12.2zp | 12.2zp.x |
| cisco / ios | 12.3 | 12.3.x |
| cisco / ios | 12.3b | 12.3b.x |
| cisco / ios | 12.3bw | 12.3bw.x |
| cisco / ios | 12.3t | 12.3t.x |
| cisco / ios | 12.3xa | 12.3xa.x |
| cisco / ios | 12.3xb | 12.3xb.x |
| cisco / ios | 12.3xc | 12.3xc.x |
| cisco / ios | 12.3xd | 12.3xd.x |
| cisco / ios | 12.3xe | 12.3xe.x |
| cisco / ios | 12.3xf | 12.3xf.x |
| cisco / ios | 12.3xg | 12.3xg.x |
| cisco / ios | 12.3xh | 12.3xh.x |
| cisco / ios | 12.3xi | 12.3xi.x |
| cisco / ios | 12.3xj | 12.3xj.x |
| cisco / ios | 12.3xk | 12.3xk.x |
| cisco / ios | 12.3xl | 12.3xl.x |
| cisco / ios | 12.3xn | 12.3xn.x |
| cisco / ios | 12.3xq | 12.3xq.x |
| cisco / ios | 12.3xr | 12.3xr.x |
| cisco / ios | 12.3xs | 12.3xs.x |
| cisco / ios | 12.3xu | 12.3xu.x |
| cisco / ios | 12.3xv | 12.3xv.x |
| cisco / ios | 12.3xx | 12.3xx.x |
| cisco / ios | 12.3ya | 12.3ya.x |
| cisco / ios | 12.3yc | 12.3yc.x |
| cisco / ios | 12.3yd | 12.3yd.x |
| cisco / ios | 12.3ye | 12.3ye.x |
| cisco / ios | 12.3yf | 12.3yf.x |
| cisco / ios | 12.3yh | 12.3yh.x |
| cisco / ios | 12.3yj | 12.3yj.x |
| cisco / ios | 12.3yl | 12.3yl.x |