Memory leak in the Data-link switching (aka DLSw) feature in Cisco IOS 12.1 through 12.4 and 15.0 through 15.1, and IOS XE 3.1.xS before 3.1.3S and 3.2.xS before 3.2.1S, when implemented over Fast Sequence Transport (FST), allows remote attackers to cause a denial of service (memory consumption and device reload or hang) via a crafted IP protocol 91 packet, aka Bug ID CSCth69364.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Ios | Cisco | 12.1 (including) | 12.1 (including) |
| Ios | Cisco | 12.1t (including) | 12.1t (including) |
| Ios | Cisco | 12.1xi (including) | 12.1xi (including) |
| Ios | Cisco | 12.1xj (including) | 12.1xj (including) |
| Ios | Cisco | 12.1xl (including) | 12.1xl (including) |
| Ios | Cisco | 12.1xm (including) | 12.1xm (including) |
| Ios | Cisco | 12.1xp (including) | 12.1xp (including) |
| Ios | Cisco | 12.1xq (including) | 12.1xq (including) |
| Ios | Cisco | 12.1xr (including) | 12.1xr (including) |
| Ios | Cisco | 12.1xs (including) | 12.1xs (including) |
| Ios | Cisco | 12.1xt (including) | 12.1xt (including) |
| Ios | Cisco | 12.1xu (including) | 12.1xu (including) |
| Ios | Cisco | 12.1xv (including) | 12.1xv (including) |
| Ios | Cisco | 12.1xy (including) | 12.1xy (including) |
| Ios | Cisco | 12.1ya (including) | 12.1ya (including) |
| Ios | Cisco | 12.1yb (including) | 12.1yb (including) |
| Ios | Cisco | 12.1yc (including) | 12.1yc (including) |
| Ios | Cisco | 12.1yd (including) | 12.1yd (including) |
| Ios | Cisco | 12.1ye (including) | 12.1ye (including) |
| Ios | Cisco | 12.1yf (including) | 12.1yf (including) |
| Ios | Cisco | 12.1yh (including) | 12.1yh (including) |
| Ios | Cisco | 12.1yi (including) | 12.1yi (including) |
| Ios | Cisco | 12.2b (including) | 12.2b (including) |
| Ios | Cisco | 12.2bw (including) | 12.2bw (including) |
| Ios | Cisco | 12.2bx (including) | 12.2bx (including) |
| Ios | Cisco | 12.2by (including) | 12.2by (including) |
| Ios | Cisco | 12.2cz (including) | 12.2cz (including) |
| Ios | Cisco | 12.2dd (including) | 12.2dd (including) |
| Ios | Cisco | 12.2dx (including) | 12.2dx (including) |
| Ios | Cisco | 12.2ex (including) | 12.2ex (including) |
| Ios | Cisco | 12.2ira (including) | 12.2ira (including) |
| Ios | Cisco | 12.2irb (including) | 12.2irb (including) |
| Ios | Cisco | 12.2irc (including) | 12.2irc (including) |
| Ios | Cisco | 12.2ird (including) | 12.2ird (including) |
| Ios | Cisco | 12.2ire (including) | 12.2ire (including) |
| Ios | Cisco | 12.2ixa (including) | 12.2ixa (including) |
| Ios | Cisco | 12.2ixb (including) | 12.2ixb (including) |
| Ios | Cisco | 12.2ixc (including) | 12.2ixc (including) |
| Ios | Cisco | 12.2ixd (including) | 12.2ixd (including) |
| Ios | Cisco | 12.2ixe (including) | 12.2ixe (including) |
| Ios | Cisco | 12.2ixf (including) | 12.2ixf (including) |
| Ios | Cisco | 12.2ixg (including) | 12.2ixg (including) |
| Ios | Cisco | 12.2ixh (including) | 12.2ixh (including) |
| Ios | Cisco | 12.2mra (including) | 12.2mra (including) |
| Ios | Cisco | 12.2mrb (including) | 12.2mrb (including) |
| Ios | Cisco | 12.2sbc (including) | 12.2sbc (including) |
| Ios | Cisco | 12.2sca (including) | 12.2sca (including) |
| Ios | Cisco | 12.2scb (including) | 12.2scb (including) |
| Ios | Cisco | 12.2scc (including) | 12.2scc (including) |
| Ios | Cisco | 12.2scd (including) | 12.2scd (including) |
| Ios | Cisco | 12.2sg (including) | 12.2sg (including) |
| Ios | Cisco | 12.2sra (including) | 12.2sra (including) |
| Ios | Cisco | 12.2srb (including) | 12.2srb (including) |
| Ios | Cisco | 12.2sre (including) | 12.2sre (including) |
| Ios | Cisco | 12.2su (including) | 12.2su (including) |
| Ios | Cisco | 12.2sv (including) | 12.2sv (including) |
| Ios | Cisco | 12.2sxa (including) | 12.2sxa (including) |
| Ios | Cisco | 12.2sxb (including) | 12.2sxb (including) |
| Ios | Cisco | 12.2sxd (including) | 12.2sxd (including) |
| Ios | Cisco | 12.2sxe (including) | 12.2sxe (including) |
| Ios | Cisco | 12.2sxf (including) | 12.2sxf (including) |
| Ios | Cisco | 12.2sy (including) | 12.2sy (including) |
| Ios | Cisco | 12.2sz (including) | 12.2sz (including) |
| Ios | Cisco | 12.2t (including) | 12.2t (including) |
| Ios | Cisco | 12.2tpc (including) | 12.2tpc (including) |
| Ios | Cisco | 12.2xa (including) | 12.2xa (including) |
| Ios | Cisco | 12.2xb (including) | 12.2xb (including) |
| Ios | Cisco | 12.2xc (including) | 12.2xc (including) |
| Ios | Cisco | 12.2xd (including) | 12.2xd (including) |
| Ios | Cisco | 12.2xg (including) | 12.2xg (including) |
| Ios | Cisco | 12.2xh (including) | 12.2xh (including) |
| Ios | Cisco | 12.2xi (including) | 12.2xi (including) |
| Ios | Cisco | 12.2xj (including) | 12.2xj (including) |
| Ios | Cisco | 12.2xk (including) | 12.2xk (including) |
| Ios | Cisco | 12.2xl (including) | 12.2xl (including) |
| Ios | Cisco | 12.2xm (including) | 12.2xm (including) |
| Ios | Cisco | 12.2xn (including) | 12.2xn (including) |
| Ios | Cisco | 12.2xq (including) | 12.2xq (including) |
| Ios | Cisco | 12.2xs (including) | 12.2xs (including) |
| Ios | Cisco | 12.2xt (including) | 12.2xt (including) |
| Ios | Cisco | 12.2xu (including) | 12.2xu (including) |
| Ios | Cisco | 12.2xv (including) | 12.2xv (including) |
| Ios | Cisco | 12.2xw (including) | 12.2xw (including) |
| Ios | Cisco | 12.2ya (including) | 12.2ya (including) |
| Ios | Cisco | 12.2yb (including) | 12.2yb (including) |
| Ios | Cisco | 12.2yc (including) | 12.2yc (including) |
| Ios | Cisco | 12.2yd (including) | 12.2yd (including) |
| Ios | Cisco | 12.2ye (including) | 12.2ye (including) |
| Ios | Cisco | 12.2yf (including) | 12.2yf (including) |
| Ios | Cisco | 12.2yh (including) | 12.2yh (including) |
| Ios | Cisco | 12.2yj (including) | 12.2yj (including) |
| Ios | Cisco | 12.2yk (including) | 12.2yk (including) |
| Ios | Cisco | 12.2yl (including) | 12.2yl (including) |
| Ios | Cisco | 12.2ym (including) | 12.2ym (including) |
| Ios | Cisco | 12.2yn (including) | 12.2yn (including) |
| Ios | Cisco | 12.2yt (including) | 12.2yt (including) |
| Ios | Cisco | 12.2yu (including) | 12.2yu (including) |
| Ios | Cisco | 12.2yv (including) | 12.2yv (including) |
| Ios | Cisco | 12.2yw (including) | 12.2yw (including) |
| Ios | Cisco | 12.2yx (including) | 12.2yx (including) |
| Ios | Cisco | 12.2yy (including) | 12.2yy (including) |
| Ios | Cisco | 12.2yz (including) | 12.2yz (including) |
| Ios | Cisco | 12.2zc (including) | 12.2zc (including) |
| Ios | Cisco | 12.2zd (including) | 12.2zd (including) |
| Ios | Cisco | 12.2ze (including) | 12.2ze (including) |
| Ios | Cisco | 12.2zf (including) | 12.2zf (including) |
| Ios | Cisco | 12.2zh (including) | 12.2zh (including) |
| Ios | Cisco | 12.2zj (including) | 12.2zj (including) |
| Ios | Cisco | 12.2zl (including) | 12.2zl (including) |
| Ios | Cisco | 12.2zp (including) | 12.2zp (including) |
| Ios | Cisco | 12.2zu (including) | 12.2zu (including) |
| Ios | Cisco | 12.2zy (including) | 12.2zy (including) |
| Ios | Cisco | 12.2zya (including) | 12.2zya (including) |
| Ios | Cisco | 12.3 (including) | 12.3 (including) |
| Ios | Cisco | 12.3b (including) | 12.3b (including) |
| Ios | Cisco | 12.3t (including) | 12.3t (including) |
| Ios | Cisco | 12.3tpc (including) | 12.3tpc (including) |
| Ios | Cisco | 12.3va (including) | 12.3va (including) |
| Ios | Cisco | 12.3xa (including) | 12.3xa (including) |
| Ios | Cisco | 12.3xb (including) | 12.3xb (including) |
| Ios | Cisco | 12.3xc (including) | 12.3xc (including) |
| Ios | Cisco | 12.3xd (including) | 12.3xd (including) |
| Ios | Cisco | 12.3xe (including) | 12.3xe (including) |
| Ios | Cisco | 12.3xf (including) | 12.3xf (including) |
| Ios | Cisco | 12.3xg (including) | 12.3xg (including) |
| Ios | Cisco | 12.3xi (including) | 12.3xi (including) |
| Ios | Cisco | 12.3xj (including) | 12.3xj (including) |
| Ios | Cisco | 12.3xk (including) | 12.3xk (including) |
| Ios | Cisco | 12.3xl (including) | 12.3xl (including) |
| Ios | Cisco | 12.3xq (including) | 12.3xq (including) |
| Ios | Cisco | 12.3xr (including) | 12.3xr (including) |
| Ios | Cisco | 12.3xs (including) | 12.3xs (including) |
| Ios | Cisco | 12.3xu (including) | 12.3xu (including) |
| Ios | Cisco | 12.3xw (including) | 12.3xw (including) |
| Ios | Cisco | 12.3xx (including) | 12.3xx (including) |
| Ios | Cisco | 12.3xy (including) | 12.3xy (including) |
| Ios | Cisco | 12.3xz (including) | 12.3xz (including) |
| Ios | Cisco | 12.3ya (including) | 12.3ya (including) |
| Ios | Cisco | 12.3yd (including) | 12.3yd (including) |
| Ios | Cisco | 12.3yf (including) | 12.3yf (including) |
| Ios | Cisco | 12.3yg (including) | 12.3yg (including) |
| Ios | Cisco | 12.3yh (including) | 12.3yh (including) |
| Ios | Cisco | 12.3yi (including) | 12.3yi (including) |
| Ios | Cisco | 12.3yj (including) | 12.3yj (including) |
| Ios | Cisco | 12.3yk (including) | 12.3yk (including) |
| Ios | Cisco | 12.3ym (including) | 12.3ym (including) |
| Ios | Cisco | 12.3yq (including) | 12.3yq (including) |
| Ios | Cisco | 12.3ys (including) | 12.3ys (including) |
| Ios | Cisco | 12.3yt (including) | 12.3yt (including) |
| Ios | Cisco | 12.3yu (including) | 12.3yu (including) |
| Ios | Cisco | 12.3yx (including) | 12.3yx (including) |
| Ios | Cisco | 12.3yz (including) | 12.3yz (including) |
| Ios | Cisco | 12.3za (including) | 12.3za (including) |
| Ios | Cisco | 12.4 (including) | 12.4 (including) |
| Ios | Cisco | 12.4gc (including) | 12.4gc (including) |
| Ios | Cisco | 12.4md (including) | 12.4md (including) |
| Ios | Cisco | 12.4mda (including) | 12.4mda (including) |
| Ios | Cisco | 12.4mr (including) | 12.4mr (including) |
| Ios | Cisco | 12.4mra (including) | 12.4mra (including) |
| Ios | Cisco | 12.4sw (including) | 12.4sw (including) |
| Ios | Cisco | 12.4t (including) | 12.4t (including) |
| Ios | Cisco | 12.4xa (including) | 12.4xa (including) |
| Ios | Cisco | 12.4xb (including) | 12.4xb (including) |
| Ios | Cisco | 12.4xc (including) | 12.4xc (including) |
| Ios | Cisco | 12.4xd (including) | 12.4xd (including) |
| Ios | Cisco | 12.4xe (including) | 12.4xe (including) |
| Ios | Cisco | 12.4xf (including) | 12.4xf (including) |
| Ios | Cisco | 12.4xg (including) | 12.4xg (including) |
| Ios | Cisco | 12.4xj (including) | 12.4xj (including) |
| Ios | Cisco | 12.4xk (including) | 12.4xk (including) |
| Ios | Cisco | 12.4xl (including) | 12.4xl (including) |
| Ios | Cisco | 12.4xm (including) | 12.4xm (including) |
| Ios | Cisco | 12.4xn (including) | 12.4xn (including) |
| Ios | Cisco | 12.4xp (including) | 12.4xp (including) |
| Ios | Cisco | 12.4xq (including) | 12.4xq (including) |
| Ios | Cisco | 12.4xr (including) | 12.4xr (including) |
| Ios | Cisco | 12.4xt (including) | 12.4xt (including) |
| Ios | Cisco | 12.4xv (including) | 12.4xv (including) |
| Ios | Cisco | 12.4xw (including) | 12.4xw (including) |
| Ios | Cisco | 12.4xy (including) | 12.4xy (including) |
| Ios | Cisco | 12.4xz (including) | 12.4xz (including) |
| Ios | Cisco | 12.4ya (including) | 12.4ya (including) |
| Ios | Cisco | 12.4yb (including) | 12.4yb (including) |
| Ios | Cisco | 12.4yd (including) | 12.4yd (including) |
| Ios | Cisco | 12.4ye (including) | 12.4ye (including) |
| Ios | Cisco | 12.4yg (including) | 12.4yg (including) |
| Ios | Cisco | 15.0m (including) | 15.0m (including) |
| Ios | Cisco | 15.0s (including) | 15.0s (including) |
| Ios | Cisco | 15.0xa (including) | 15.0xa (including) |
| Ios | Cisco | 15.1t (including) | 15.1t (including) |
| Ios | Cisco | 15.1xb (including) | 15.1xb (including) |