CVE Vulnerabilities

CVE-2005-1020

Improper Authentication

Published: May 02, 2005 | Modified: Oct 11, 2017
CVSS 3.x
N/A
Source:
NVD
CVSS 2.x
7.1 HIGH
AV:N/AC:M/Au:N/C:N/I:N/A:C
RedHat/V2
RedHat/V3
Ubuntu

Secure Shell (SSH) 2 in Cisco IOS 12.0 through 12.3 allows remote attackers to cause a denial of service (device reload) (1) via a username that contains a domain name when using a TACACS+ server to authenticate, (2) when a new SSH session is in the login phase and a currently logged in user issues a send command, or (3) when IOS is logging messages and an SSH session is terminated while the server is sending data.

Weakness

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

Affected Software

Name Vendor Start Version End Version
Ios Cisco 12.0 (including) 12.0 (including)
Ios Cisco 12.0(23)s4 (including) 12.0(23)s4 (including)
Ios Cisco 12.0(23)s5 (including) 12.0(23)s5 (including)
Ios Cisco 12.0(24)s1 (including) 12.0(24)s1 (including)
Ios Cisco 12.0(24)s4 (including) 12.0(24)s4 (including)
Ios Cisco 12.0(24)s5 (including) 12.0(24)s5 (including)
Ios Cisco 12.0(24.2)s (including) 12.0(24.2)s (including)
Ios Cisco 12.0(26)s1 (including) 12.0(26)s1 (including)
Ios Cisco 12.0(27)s (including) 12.0(27)s (including)
Ios Cisco 12.0(27)sv (including) 12.0(27)sv (including)
Ios Cisco 12.0(27)sv1 (including) 12.0(27)sv1 (including)
Ios Cisco 12.0da (including) 12.0da (including)
Ios Cisco 12.0db (including) 12.0db (including)
Ios Cisco 12.0dc (including) 12.0dc (including)
Ios Cisco 12.0s (including) 12.0s (including)
Ios Cisco 12.0sc (including) 12.0sc (including)
Ios Cisco 12.0sl (including) 12.0sl (including)
Ios Cisco 12.0sp (including) 12.0sp (including)
Ios Cisco 12.0st (including) 12.0st (including)
Ios Cisco 12.0sv (including) 12.0sv (including)
Ios Cisco 12.0sx (including) 12.0sx (including)
Ios Cisco 12.0sy (including) 12.0sy (including)
Ios Cisco 12.0sz (including) 12.0sz (including)
Ios Cisco 12.0t (including) 12.0t (including)
Ios Cisco 12.0w5 (including) 12.0w5 (including)
Ios Cisco 12.0wc (including) 12.0wc (including)
Ios Cisco 12.0wt (including) 12.0wt (including)
Ios Cisco 12.0wx (including) 12.0wx (including)
Ios Cisco 12.0xa (including) 12.0xa (including)
Ios Cisco 12.0xb (including) 12.0xb (including)
Ios Cisco 12.0xc (including) 12.0xc (including)
Ios Cisco 12.0xd (including) 12.0xd (including)
Ios Cisco 12.0xe (including) 12.0xe (including)
Ios Cisco 12.0xf (including) 12.0xf (including)
Ios Cisco 12.0xg (including) 12.0xg (including)
Ios Cisco 12.0xh (including) 12.0xh (including)
Ios Cisco 12.0xi (including) 12.0xi (including)
Ios Cisco 12.0xj (including) 12.0xj (including)
Ios Cisco 12.0xk (including) 12.0xk (including)
Ios Cisco 12.0xl (including) 12.0xl (including)
Ios Cisco 12.0xm (including) 12.0xm (including)
Ios Cisco 12.0xn (including) 12.0xn (including)
Ios Cisco 12.0xp (including) 12.0xp (including)
Ios Cisco 12.0xq (including) 12.0xq (including)
Ios Cisco 12.0xr (including) 12.0xr (including)
Ios Cisco 12.0xs (including) 12.0xs (including)
Ios Cisco 12.0xt (including) 12.0xt (including)
Ios Cisco 12.0xu (including) 12.0xu (including)
Ios Cisco 12.0xv (including) 12.0xv (including)
Ios Cisco 12.0xw (including) 12.0xw (including)
Ios Cisco 12.1 (including) 12.1 (including)
Ios Cisco 12.1(11)e (including) 12.1(11)e (including)
Ios Cisco 12.1(11b)e (including) 12.1(11b)e (including)
Ios Cisco 12.1(11b)e12 (including) 12.1(11b)e12 (including)
Ios Cisco 12.1(11b)e14 (including) 12.1(11b)e14 (including)
Ios Cisco 12.1(13)e9 (including) 12.1(13)e9 (including)
Ios Cisco 12.1(19)e1 (including) 12.1(19)e1 (including)
Ios Cisco 12.1(20)e (including) 12.1(20)e (including)
Ios Cisco 12.1(20)e1 (including) 12.1(20)e1 (including)
Ios Cisco 12.1(20)e2 (including) 12.1(20)e2 (including)
Ios Cisco 12.1(20)ea1 (including) 12.1(20)ea1 (including)
Ios Cisco 12.1(20)ec (including) 12.1(20)ec (including)
Ios Cisco 12.1(20)ec1 (including) 12.1(20)ec1 (including)
Ios Cisco 12.1(20)eo (including) 12.1(20)eo (including)
Ios Cisco 12.1(20)ew (including) 12.1(20)ew (including)
Ios Cisco 12.1(20)ew1 (including) 12.1(20)ew1 (including)
Ios Cisco 12.1aa (including) 12.1aa (including)
Ios Cisco 12.1ax (including) 12.1ax (including)
Ios Cisco 12.1ay (including) 12.1ay (including)
Ios Cisco 12.1az (including) 12.1az (including)
Ios Cisco 12.1cx (including) 12.1cx (including)
Ios Cisco 12.1da (including) 12.1da (including)
Ios Cisco 12.1db (including) 12.1db (including)
Ios Cisco 12.1dc (including) 12.1dc (including)
Ios Cisco 12.1e (including) 12.1e (including)
Ios Cisco 12.1ea (including) 12.1ea (including)
Ios Cisco 12.1eb (including) 12.1eb (including)
Ios Cisco 12.1ec (including) 12.1ec (including)
Ios Cisco 12.1eo (including) 12.1eo (including)
Ios Cisco 12.1eu (including) 12.1eu (including)
Ios Cisco 12.1ev (including) 12.1ev (including)
Ios Cisco 12.1ew (including) 12.1ew (including)
Ios Cisco 12.1ex (including) 12.1ex (including)
Ios Cisco 12.1ey (including) 12.1ey (including)
Ios Cisco 12.1m (including) 12.1m (including)
Ios Cisco 12.1t (including) 12.1t (including)
Ios Cisco 12.1xa (including) 12.1xa (including)
Ios Cisco 12.1xb (including) 12.1xb (including)
Ios Cisco 12.1xc (including) 12.1xc (including)
Ios Cisco 12.1xd (including) 12.1xd (including)
Ios Cisco 12.1xe (including) 12.1xe (including)
Ios Cisco 12.1xf (including) 12.1xf (including)
Ios Cisco 12.1xg (including) 12.1xg (including)
Ios Cisco 12.1xh (including) 12.1xh (including)
Ios Cisco 12.1xi (including) 12.1xi (including)
Ios Cisco 12.1xj (including) 12.1xj (including)
Ios Cisco 12.1xk (including) 12.1xk (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 12.1xw (including) 12.1xw (including)
Ios Cisco 12.1xx (including) 12.1xx (including)
Ios Cisco 12.1xy (including) 12.1xy (including)
Ios Cisco 12.1xz (including) 12.1xz (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 12.1yj (including) 12.1yj (including)
Ios Cisco 12.2 (including) 12.2 (including)
Ios Cisco 12.2(1)xa (including) 12.2(1)xa (including)
Ios Cisco 12.2(1)xd (including) 12.2(1)xd (including)
Ios Cisco 12.2(1)xd1 (including) 12.2(1)xd1 (including)
Ios Cisco 12.2(1)xd3 (including) 12.2(1)xd3 (including)
Ios Cisco 12.2(1)xd4 (including) 12.2(1)xd4 (including)
Ios Cisco 12.2(1)xe (including) 12.2(1)xe (including)
Ios Cisco 12.2(1)xe2 (including) 12.2(1)xe2 (including)
Ios Cisco 12.2(1)xe3 (including) 12.2(1)xe3 (including)
Ios Cisco 12.2(1)xh (including) 12.2(1)xh (including)
Ios Cisco 12.2(1)xq (including) 12.2(1)xq (including)
Ios Cisco 12.2(1)xs (including) 12.2(1)xs (including)
Ios Cisco 12.2(1)xs1 (including) 12.2(1)xs1 (including)
Ios Cisco 12.2(2)t4 (including) 12.2(2)t4 (including)
Ios Cisco 12.2(2)xa (including) 12.2(2)xa (including)
Ios Cisco 12.2(2)xa1 (including) 12.2(2)xa1 (including)
Ios Cisco 12.2(2)xa5 (including) 12.2(2)xa5 (including)
Ios Cisco 12.2(2)xb (including) 12.2(2)xb (including)
Ios Cisco 12.2(2)xb3 (including) 12.2(2)xb3 (including)
Ios Cisco 12.2(2)xb4 (including) 12.2(2)xb4 (including)
Ios Cisco 12.2(2)xf (including) 12.2(2)xf (including)
Ios Cisco 12.2(2)xg (including) 12.2(2)xg (including)
Ios Cisco 12.2(2)xh (including) 12.2(2)xh (including)
Ios Cisco 12.2(2)xh2 (including) 12.2(2)xh2 (including)
Ios Cisco 12.2(2)xh3 (including) 12.2(2)xh3 (including)
Ios Cisco 12.2(2)xi (including) 12.2(2)xi (including)
Ios Cisco 12.2(2)xi1 (including) 12.2(2)xi1 (including)
Ios Cisco 12.2(2)xi2 (including) 12.2(2)xi2 (including)
Ios Cisco 12.2(2)xj (including) 12.2(2)xj (including)
Ios Cisco 12.2(2)xj1 (including) 12.2(2)xj1 (including)
Ios Cisco 12.2(2)xk (including) 12.2(2)xk (including)
Ios Cisco 12.2(2)xk2 (including) 12.2(2)xk2 (including)
Ios Cisco 12.2(2)xn (including) 12.2(2)xn (including)
Ios Cisco 12.2(2)xt (including) 12.2(2)xt (including)
Ios Cisco 12.2(2)xt3 (including) 12.2(2)xt3 (including)
Ios Cisco 12.2(2)xu (including) 12.2(2)xu (including)
Ios Cisco 12.2(2)xu2 (including) 12.2(2)xu2 (including)
Ios Cisco 12.2(4)ja (including) 12.2(4)ja (including)
Ios Cisco 12.2(4)ja1 (including) 12.2(4)ja1 (including)
Ios Cisco 12.2(8)ja (including) 12.2(8)ja (including)
Ios Cisco 12.2(11)ja (including) 12.2(11)ja (including)
Ios Cisco 12.2(11)ja1 (including) 12.2(11)ja1 (including)
Ios Cisco 12.2(11)t (including) 12.2(11)t (including)
Ios Cisco 12.2(12g) (including) 12.2(12g) (including)
Ios Cisco 12.2(12h) (including) 12.2(12h) (including)
Ios Cisco 12.2(14)sy (including) 12.2(14)sy (including)
Ios Cisco 12.2(14)sy1 (including) 12.2(14)sy1 (including)
Ios Cisco 12.2(14)sz (including) 12.2(14)sz (including)
Ios Cisco 12.2(14)za (including) 12.2(14)za (including)
Ios Cisco 12.2(14)za2 (including) 12.2(14)za2 (including)
Ios Cisco 12.2(14.5) (including) 12.2(14.5) (including)
Ios Cisco 12.2(14.5)t (including) 12.2(14.5)t (including)
Ios Cisco 12.2(15)zn (including) 12.2(15)zn (including)
Ios Cisco 12.2(15.1)s (including) 12.2(15.1)s (including)
Ios Cisco 12.2(16)b (including) 12.2(16)b (including)
Ios Cisco 12.2(16.1)b (including) 12.2(16.1)b (including)
Ios Cisco 12.2(17a)sxa (including) 12.2(17a)sxa (including)
Ios Cisco 12.2(18)ew (including) 12.2(18)ew (including)
Ios Cisco 12.2(18)ewa (including) 12.2(18)ewa (including)
Ios Cisco 12.2(18)s (including) 12.2(18)s (including)
Ios Cisco 12.2(18)se (including) 12.2(18)se (including)
Ios Cisco 12.2(18)sv (including) 12.2(18)sv (including)
Ios Cisco 12.2(18)sw (including) 12.2(18)sw (including)
Ios Cisco 12.2(20)ew (including) 12.2(20)ew (including)
Ios Cisco 12.2(20)s (including) 12.2(20)s (including)
Ios Cisco 12.2(20)s1 (including) 12.2(20)s1 (including)
Ios Cisco 12.2(21) (including) 12.2(21) (including)
Ios Cisco 12.2(21a) (including) 12.2(21a) (including)
Ios Cisco 12.2(23) (including) 12.2(23) (including)
Ios Cisco 12.2b (including) 12.2b (including)
Ios Cisco 12.2bc (including) 12.2bc (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 12.2bz (including) 12.2bz (including)
Ios Cisco 12.2cx (including) 12.2cx (including)
Ios Cisco 12.2cy (including) 12.2cy (including)
Ios Cisco 12.2cz (including) 12.2cz (including)
Ios Cisco 12.2da (including) 12.2da (including)
Ios Cisco 12.2dd (including) 12.2dd (including)
Ios Cisco 12.2dx (including) 12.2dx (including)
Ios Cisco 12.2ew (including) 12.2ew (including)
Ios Cisco 12.2ewa (including) 12.2ewa (including)
Ios Cisco 12.2ja (including) 12.2ja (including)
Ios Cisco 12.2jk (including) 12.2jk (including)
Ios Cisco 12.2mb (including) 12.2mb (including)
Ios Cisco 12.2mc (including) 12.2mc (including)
Ios Cisco 12.2mx (including) 12.2mx (including)
Ios Cisco 12.2s (including) 12.2s (including)
Ios Cisco 12.2se (including) 12.2se (including)
Ios Cisco 12.2su (including) 12.2su (including)
Ios Cisco 12.2sv (including) 12.2sv (including)
Ios Cisco 12.2sw (including) 12.2sw (including)
Ios Cisco 12.2sx (including) 12.2sx (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 12.2sy (including) 12.2sy (including)
Ios Cisco 12.2sz (including) 12.2sz (including)
Ios Cisco 12.2t (including) 12.2t (including)
Ios Cisco 12.2x (including) 12.2x (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 12.2xe (including) 12.2xe (including)
Ios Cisco 12.2xf (including) 12.2xf (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 12.2xr (including) 12.2xr (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 12.2xw (including) 12.2xw (including)
Ios Cisco 12.2xz (including) 12.2xz (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 12.2yg (including) 12.2yg (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 12.2yo (including) 12.2yo (including)
Ios Cisco 12.2yp (including) 12.2yp (including)
Ios Cisco 12.2yq (including) 12.2yq (including)
Ios Cisco 12.2yr (including) 12.2yr (including)
Ios Cisco 12.2ys (including) 12.2ys (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 12.2za (including) 12.2za (including)
Ios Cisco 12.2zb (including) 12.2zb (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 12.2zg (including) 12.2zg (including)
Ios Cisco 12.2zh (including) 12.2zh (including)
Ios Cisco 12.2zi (including) 12.2zi (including)
Ios Cisco 12.2zj (including) 12.2zj (including)
Ios Cisco 12.2zk (including) 12.2zk (including)
Ios Cisco 12.2zl (including) 12.2zl (including)
Ios Cisco 12.2zm (including) 12.2zm (including)
Ios Cisco 12.2zn (including) 12.2zn (including)
Ios Cisco 12.2zo (including) 12.2zo (including)
Ios Cisco 12.2zp (including) 12.2zp (including)
Ios Cisco 12.2zq (including) 12.2zq (including)
Ios Cisco 12.3 (including) 12.3 (including)
Ios Cisco 12.3(2)t3 (including) 12.3(2)t3 (including)
Ios Cisco 12.3(2)xc1 (including) 12.3(2)xc1 (including)
Ios Cisco 12.3(2)xc2 (including) 12.3(2)xc2 (including)
Ios Cisco 12.3(4)t (including) 12.3(4)t (including)
Ios Cisco 12.3(4)t1 (including) 12.3(4)t1 (including)
Ios Cisco 12.3(4)t2 (including) 12.3(4)t2 (including)
Ios Cisco 12.3(4)t3 (including) 12.3(4)t3 (including)
Ios Cisco 12.3(4)xd (including) 12.3(4)xd (including)
Ios Cisco 12.3(4)xd1 (including) 12.3(4)xd1 (including)
Ios Cisco 12.3(5) (including) 12.3(5) (including)
Ios Cisco 12.3(5a) (including) 12.3(5a) (including)
Ios Cisco 12.3(5a)b (including) 12.3(5a)b (including)
Ios Cisco 12.3(5b) (including) 12.3(5b) (including)
Ios Cisco 12.3(6) (including) 12.3(6) (including)
Ios Cisco 12.3b (including) 12.3b (including)
Ios Cisco 12.3bc (including) 12.3bc (including)
Ios Cisco 12.3bw (including) 12.3bw (including)
Ios Cisco 12.3j (including) 12.3j (including)
Ios Cisco 12.3ja (including) 12.3ja (including)
Ios Cisco 12.3t (including) 12.3t (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 12.3xh (including) 12.3xh (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 12.3xm (including) 12.3xm (including)
Ios Cisco 12.3xn (including) 12.3xn (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 12.3xt (including) 12.3xt (including)
Ios Cisco 12.3xu (including) 12.3xu (including)
Ios Cisco 12.3xv (including) 12.3xv (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 12.3yc (including) 12.3yc (including)
Ios Cisco 12.3yd (including) 12.3yd (including)
Ios Cisco 12.3ye (including) 12.3ye (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 12.3yj (including) 12.3yj (including)
Ios Cisco 12.3yl (including) 12.3yl (including)

Potential Mitigations

References