Vulnerabilities
Misconfiguration
Compliance
CVE Vulnerabilities

CVE-2005-1020

Improper Authentication

Published: May 02, 2005 | Modified: Apr 03, 2025
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
Vulnerability-free packages from our partners
root.io logo minimus.io logo echo.ai logo
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2005-1020
CWEhttps://cwe.mitre.org/data/definitions/287.html

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

NameVendorStart VersionEnd Version
IosCisco12.0 (including)12.0 (including)
IosCisco12.0(23)s4 (including)12.0(23)s4 (including)
IosCisco12.0(23)s5 (including)12.0(23)s5 (including)
IosCisco12.0(24)s1 (including)12.0(24)s1 (including)
IosCisco12.0(24)s4 (including)12.0(24)s4 (including)
IosCisco12.0(24)s5 (including)12.0(24)s5 (including)
IosCisco12.0(24.2)s (including)12.0(24.2)s (including)
IosCisco12.0(26)s1 (including)12.0(26)s1 (including)
IosCisco12.0(27)s (including)12.0(27)s (including)
IosCisco12.0(27)sv (including)12.0(27)sv (including)
IosCisco12.0(27)sv1 (including)12.0(27)sv1 (including)
IosCisco12.0da (including)12.0da (including)
IosCisco12.0db (including)12.0db (including)
IosCisco12.0dc (including)12.0dc (including)
IosCisco12.0s (including)12.0s (including)
IosCisco12.0sc (including)12.0sc (including)
IosCisco12.0sl (including)12.0sl (including)
IosCisco12.0sp (including)12.0sp (including)
IosCisco12.0st (including)12.0st (including)
IosCisco12.0sv (including)12.0sv (including)
IosCisco12.0sx (including)12.0sx (including)
IosCisco12.0sy (including)12.0sy (including)
IosCisco12.0sz (including)12.0sz (including)
IosCisco12.0t (including)12.0t (including)
IosCisco12.0w5 (including)12.0w5 (including)
IosCisco12.0wc (including)12.0wc (including)
IosCisco12.0wt (including)12.0wt (including)
IosCisco12.0wx (including)12.0wx (including)
IosCisco12.0xa (including)12.0xa (including)
IosCisco12.0xb (including)12.0xb (including)
IosCisco12.0xc (including)12.0xc (including)
IosCisco12.0xd (including)12.0xd (including)
IosCisco12.0xe (including)12.0xe (including)
IosCisco12.0xf (including)12.0xf (including)
IosCisco12.0xg (including)12.0xg (including)
IosCisco12.0xh (including)12.0xh (including)
IosCisco12.0xi (including)12.0xi (including)
IosCisco12.0xj (including)12.0xj (including)
IosCisco12.0xk (including)12.0xk (including)
IosCisco12.0xl (including)12.0xl (including)
IosCisco12.0xm (including)12.0xm (including)
IosCisco12.0xn (including)12.0xn (including)
IosCisco12.0xp (including)12.0xp (including)
IosCisco12.0xq (including)12.0xq (including)
IosCisco12.0xr (including)12.0xr (including)
IosCisco12.0xs (including)12.0xs (including)
IosCisco12.0xt (including)12.0xt (including)
IosCisco12.0xu (including)12.0xu (including)
IosCisco12.0xv (including)12.0xv (including)
IosCisco12.0xw (including)12.0xw (including)
IosCisco12.1 (including)12.1 (including)
IosCisco12.1(11)e (including)12.1(11)e (including)
IosCisco12.1(11b)e (including)12.1(11b)e (including)
IosCisco12.1(11b)e12 (including)12.1(11b)e12 (including)
IosCisco12.1(11b)e14 (including)12.1(11b)e14 (including)
IosCisco12.1(13)e9 (including)12.1(13)e9 (including)
IosCisco12.1(19)e1 (including)12.1(19)e1 (including)
IosCisco12.1(20)e (including)12.1(20)e (including)
IosCisco12.1(20)e1 (including)12.1(20)e1 (including)
IosCisco12.1(20)e2 (including)12.1(20)e2 (including)
IosCisco12.1(20)ea1 (including)12.1(20)ea1 (including)
IosCisco12.1(20)ec (including)12.1(20)ec (including)
IosCisco12.1(20)ec1 (including)12.1(20)ec1 (including)
IosCisco12.1(20)eo (including)12.1(20)eo (including)
IosCisco12.1(20)ew (including)12.1(20)ew (including)
IosCisco12.1(20)ew1 (including)12.1(20)ew1 (including)
IosCisco12.1aa (including)12.1aa (including)
IosCisco12.1ax (including)12.1ax (including)
IosCisco12.1ay (including)12.1ay (including)
IosCisco12.1az (including)12.1az (including)
IosCisco12.1cx (including)12.1cx (including)
IosCisco12.1da (including)12.1da (including)
IosCisco12.1db (including)12.1db (including)
IosCisco12.1dc (including)12.1dc (including)
IosCisco12.1e (including)12.1e (including)
IosCisco12.1ea (including)12.1ea (including)
IosCisco12.1eb (including)12.1eb (including)
IosCisco12.1ec (including)12.1ec (including)
IosCisco12.1eo (including)12.1eo (including)
IosCisco12.1eu (including)12.1eu (including)
IosCisco12.1ev (including)12.1ev (including)
IosCisco12.1ew (including)12.1ew (including)
IosCisco12.1ex (including)12.1ex (including)
IosCisco12.1ey (including)12.1ey (including)
IosCisco12.1m (including)12.1m (including)
IosCisco12.1t (including)12.1t (including)
IosCisco12.1xa (including)12.1xa (including)
IosCisco12.1xb (including)12.1xb (including)
IosCisco12.1xc (including)12.1xc (including)
IosCisco12.1xd (including)12.1xd (including)
IosCisco12.1xe (including)12.1xe (including)
IosCisco12.1xf (including)12.1xf (including)
IosCisco12.1xg (including)12.1xg (including)
IosCisco12.1xh (including)12.1xh (including)
IosCisco12.1xi (including)12.1xi (including)
IosCisco12.1xj (including)12.1xj (including)
IosCisco12.1xk (including)12.1xk (including)
IosCisco12.1xl (including)12.1xl (including)
IosCisco12.1xm (including)12.1xm (including)
IosCisco12.1xp (including)12.1xp (including)
IosCisco12.1xq (including)12.1xq (including)
IosCisco12.1xr (including)12.1xr (including)
IosCisco12.1xs (including)12.1xs (including)
IosCisco12.1xt (including)12.1xt (including)
IosCisco12.1xu (including)12.1xu (including)
IosCisco12.1xv (including)12.1xv (including)
IosCisco12.1xw (including)12.1xw (including)
IosCisco12.1xx (including)12.1xx (including)
IosCisco12.1xy (including)12.1xy (including)
IosCisco12.1xz (including)12.1xz (including)
IosCisco12.1ya (including)12.1ya (including)
IosCisco12.1yb (including)12.1yb (including)
IosCisco12.1yc (including)12.1yc (including)
IosCisco12.1yd (including)12.1yd (including)
IosCisco12.1ye (including)12.1ye (including)
IosCisco12.1yf (including)12.1yf (including)
IosCisco12.1yh (including)12.1yh (including)
IosCisco12.1yi (including)12.1yi (including)
IosCisco12.1yj (including)12.1yj (including)
IosCisco12.2 (including)12.2 (including)
IosCisco12.2(1)xa (including)12.2(1)xa (including)
IosCisco12.2(1)xd (including)12.2(1)xd (including)
IosCisco12.2(1)xd1 (including)12.2(1)xd1 (including)
IosCisco12.2(1)xd3 (including)12.2(1)xd3 (including)
IosCisco12.2(1)xd4 (including)12.2(1)xd4 (including)
IosCisco12.2(1)xe (including)12.2(1)xe (including)
IosCisco12.2(1)xe2 (including)12.2(1)xe2 (including)
IosCisco12.2(1)xe3 (including)12.2(1)xe3 (including)
IosCisco12.2(1)xh (including)12.2(1)xh (including)
IosCisco12.2(1)xq (including)12.2(1)xq (including)
IosCisco12.2(1)xs (including)12.2(1)xs (including)
IosCisco12.2(1)xs1 (including)12.2(1)xs1 (including)
IosCisco12.2(2)t4 (including)12.2(2)t4 (including)
IosCisco12.2(2)xa (including)12.2(2)xa (including)
IosCisco12.2(2)xa1 (including)12.2(2)xa1 (including)
IosCisco12.2(2)xa5 (including)12.2(2)xa5 (including)
IosCisco12.2(2)xb (including)12.2(2)xb (including)
IosCisco12.2(2)xb3 (including)12.2(2)xb3 (including)
IosCisco12.2(2)xb4 (including)12.2(2)xb4 (including)
IosCisco12.2(2)xf (including)12.2(2)xf (including)
IosCisco12.2(2)xg (including)12.2(2)xg (including)
IosCisco12.2(2)xh (including)12.2(2)xh (including)
IosCisco12.2(2)xh2 (including)12.2(2)xh2 (including)
IosCisco12.2(2)xh3 (including)12.2(2)xh3 (including)
IosCisco12.2(2)xi (including)12.2(2)xi (including)
IosCisco12.2(2)xi1 (including)12.2(2)xi1 (including)
IosCisco12.2(2)xi2 (including)12.2(2)xi2 (including)
IosCisco12.2(2)xj (including)12.2(2)xj (including)
IosCisco12.2(2)xj1 (including)12.2(2)xj1 (including)
IosCisco12.2(2)xk (including)12.2(2)xk (including)
IosCisco12.2(2)xk2 (including)12.2(2)xk2 (including)
IosCisco12.2(2)xn (including)12.2(2)xn (including)
IosCisco12.2(2)xt (including)12.2(2)xt (including)
IosCisco12.2(2)xt3 (including)12.2(2)xt3 (including)
IosCisco12.2(2)xu (including)12.2(2)xu (including)
IosCisco12.2(2)xu2 (including)12.2(2)xu2 (including)
IosCisco12.2(4)ja (including)12.2(4)ja (including)
IosCisco12.2(4)ja1 (including)12.2(4)ja1 (including)
IosCisco12.2(8)ja (including)12.2(8)ja (including)
IosCisco12.2(11)ja (including)12.2(11)ja (including)
IosCisco12.2(11)ja1 (including)12.2(11)ja1 (including)
IosCisco12.2(11)t (including)12.2(11)t (including)
IosCisco12.2(12g) (including)12.2(12g) (including)
IosCisco12.2(12h) (including)12.2(12h) (including)
IosCisco12.2(14)sy (including)12.2(14)sy (including)
IosCisco12.2(14)sy1 (including)12.2(14)sy1 (including)
IosCisco12.2(14)sz (including)12.2(14)sz (including)
IosCisco12.2(14)za (including)12.2(14)za (including)
IosCisco12.2(14)za2 (including)12.2(14)za2 (including)
IosCisco12.2(14.5) (including)12.2(14.5) (including)
IosCisco12.2(14.5)t (including)12.2(14.5)t (including)
IosCisco12.2(15)zn (including)12.2(15)zn (including)
IosCisco12.2(15.1)s (including)12.2(15.1)s (including)
IosCisco12.2(16)b (including)12.2(16)b (including)
IosCisco12.2(16.1)b (including)12.2(16.1)b (including)
IosCisco12.2(17a)sxa (including)12.2(17a)sxa (including)
IosCisco12.2(18)ew (including)12.2(18)ew (including)
IosCisco12.2(18)ewa (including)12.2(18)ewa (including)
IosCisco12.2(18)s (including)12.2(18)s (including)
IosCisco12.2(18)se (including)12.2(18)se (including)
IosCisco12.2(18)sv (including)12.2(18)sv (including)
IosCisco12.2(18)sw (including)12.2(18)sw (including)
IosCisco12.2(20)ew (including)12.2(20)ew (including)
IosCisco12.2(20)s (including)12.2(20)s (including)
IosCisco12.2(20)s1 (including)12.2(20)s1 (including)
IosCisco12.2(21) (including)12.2(21) (including)
IosCisco12.2(21a) (including)12.2(21a) (including)
IosCisco12.2(23) (including)12.2(23) (including)
IosCisco12.2b (including)12.2b (including)
IosCisco12.2bc (including)12.2bc (including)
IosCisco12.2bw (including)12.2bw (including)
IosCisco12.2bx (including)12.2bx (including)
IosCisco12.2by (including)12.2by (including)
IosCisco12.2bz (including)12.2bz (including)
IosCisco12.2cx (including)12.2cx (including)
IosCisco12.2cy (including)12.2cy (including)
IosCisco12.2cz (including)12.2cz (including)
IosCisco12.2da (including)12.2da (including)
IosCisco12.2dd (including)12.2dd (including)
IosCisco12.2dx (including)12.2dx (including)
IosCisco12.2ew (including)12.2ew (including)
IosCisco12.2ewa (including)12.2ewa (including)
IosCisco12.2ja (including)12.2ja (including)
IosCisco12.2jk (including)12.2jk (including)
IosCisco12.2mb (including)12.2mb (including)
IosCisco12.2mc (including)12.2mc (including)
IosCisco12.2mx (including)12.2mx (including)
IosCisco12.2s (including)12.2s (including)
IosCisco12.2se (including)12.2se (including)
IosCisco12.2su (including)12.2su (including)
IosCisco12.2sv (including)12.2sv (including)
IosCisco12.2sw (including)12.2sw (including)
IosCisco12.2sx (including)12.2sx (including)
IosCisco12.2sxa (including)12.2sxa (including)
IosCisco12.2sxb (including)12.2sxb (including)
IosCisco12.2sxd (including)12.2sxd (including)
IosCisco12.2sy (including)12.2sy (including)
IosCisco12.2sz (including)12.2sz (including)
IosCisco12.2t (including)12.2t (including)
IosCisco12.2x (including)12.2x (including)
IosCisco12.2xa (including)12.2xa (including)
IosCisco12.2xb (including)12.2xb (including)
IosCisco12.2xc (including)12.2xc (including)
IosCisco12.2xd (including)12.2xd (including)
IosCisco12.2xe (including)12.2xe (including)
IosCisco12.2xf (including)12.2xf (including)
IosCisco12.2xg (including)12.2xg (including)
IosCisco12.2xh (including)12.2xh (including)
IosCisco12.2xi (including)12.2xi (including)
IosCisco12.2xj (including)12.2xj (including)
IosCisco12.2xk (including)12.2xk (including)
IosCisco12.2xl (including)12.2xl (including)
IosCisco12.2xm (including)12.2xm (including)
IosCisco12.2xn (including)12.2xn (including)
IosCisco12.2xq (including)12.2xq (including)
IosCisco12.2xr (including)12.2xr (including)
IosCisco12.2xs (including)12.2xs (including)
IosCisco12.2xt (including)12.2xt (including)
IosCisco12.2xu (including)12.2xu (including)
IosCisco12.2xw (including)12.2xw (including)
IosCisco12.2xz (including)12.2xz (including)
IosCisco12.2ya (including)12.2ya (including)
IosCisco12.2yb (including)12.2yb (including)
IosCisco12.2yc (including)12.2yc (including)
IosCisco12.2yd (including)12.2yd (including)
IosCisco12.2ye (including)12.2ye (including)
IosCisco12.2yf (including)12.2yf (including)
IosCisco12.2yg (including)12.2yg (including)
IosCisco12.2yh (including)12.2yh (including)
IosCisco12.2yj (including)12.2yj (including)
IosCisco12.2yk (including)12.2yk (including)
IosCisco12.2yl (including)12.2yl (including)
IosCisco12.2ym (including)12.2ym (including)
IosCisco12.2yn (including)12.2yn (including)
IosCisco12.2yo (including)12.2yo (including)
IosCisco12.2yp (including)12.2yp (including)
IosCisco12.2yq (including)12.2yq (including)
IosCisco12.2yr (including)12.2yr (including)
IosCisco12.2ys (including)12.2ys (including)
IosCisco12.2yt (including)12.2yt (including)
IosCisco12.2yu (including)12.2yu (including)
IosCisco12.2yv (including)12.2yv (including)
IosCisco12.2yw (including)12.2yw (including)
IosCisco12.2yx (including)12.2yx (including)
IosCisco12.2yy (including)12.2yy (including)
IosCisco12.2yz (including)12.2yz (including)
IosCisco12.2za (including)12.2za (including)
IosCisco12.2zb (including)12.2zb (including)
IosCisco12.2zc (including)12.2zc (including)
IosCisco12.2zd (including)12.2zd (including)
IosCisco12.2ze (including)12.2ze (including)
IosCisco12.2zf (including)12.2zf (including)
IosCisco12.2zg (including)12.2zg (including)
IosCisco12.2zh (including)12.2zh (including)
IosCisco12.2zi (including)12.2zi (including)
IosCisco12.2zj (including)12.2zj (including)
IosCisco12.2zk (including)12.2zk (including)
IosCisco12.2zl (including)12.2zl (including)
IosCisco12.2zm (including)12.2zm (including)
IosCisco12.2zn (including)12.2zn (including)
IosCisco12.2zo (including)12.2zo (including)
IosCisco12.2zp (including)12.2zp (including)
IosCisco12.2zq (including)12.2zq (including)
IosCisco12.3 (including)12.3 (including)
IosCisco12.3(2)t3 (including)12.3(2)t3 (including)
IosCisco12.3(2)xc1 (including)12.3(2)xc1 (including)
IosCisco12.3(2)xc2 (including)12.3(2)xc2 (including)
IosCisco12.3(4)t (including)12.3(4)t (including)
IosCisco12.3(4)t1 (including)12.3(4)t1 (including)
IosCisco12.3(4)t2 (including)12.3(4)t2 (including)
IosCisco12.3(4)t3 (including)12.3(4)t3 (including)
IosCisco12.3(4)xd (including)12.3(4)xd (including)
IosCisco12.3(4)xd1 (including)12.3(4)xd1 (including)
IosCisco12.3(5) (including)12.3(5) (including)
IosCisco12.3(5a) (including)12.3(5a) (including)
IosCisco12.3(5a)b (including)12.3(5a)b (including)
IosCisco12.3(5b) (including)12.3(5b) (including)
IosCisco12.3(6) (including)12.3(6) (including)
IosCisco12.3b (including)12.3b (including)
IosCisco12.3bc (including)12.3bc (including)
IosCisco12.3bw (including)12.3bw (including)
IosCisco12.3j (including)12.3j (including)
IosCisco12.3ja (including)12.3ja (including)
IosCisco12.3t (including)12.3t (including)
IosCisco12.3xa (including)12.3xa (including)
IosCisco12.3xb (including)12.3xb (including)
IosCisco12.3xc (including)12.3xc (including)
IosCisco12.3xd (including)12.3xd (including)
IosCisco12.3xe (including)12.3xe (including)
IosCisco12.3xf (including)12.3xf (including)
IosCisco12.3xg (including)12.3xg (including)
IosCisco12.3xh (including)12.3xh (including)
IosCisco12.3xi (including)12.3xi (including)
IosCisco12.3xj (including)12.3xj (including)
IosCisco12.3xk (including)12.3xk (including)
IosCisco12.3xl (including)12.3xl (including)
IosCisco12.3xm (including)12.3xm (including)
IosCisco12.3xn (including)12.3xn (including)
IosCisco12.3xq (including)12.3xq (including)
IosCisco12.3xr (including)12.3xr (including)
IosCisco12.3xs (including)12.3xs (including)
IosCisco12.3xt (including)12.3xt (including)
IosCisco12.3xu (including)12.3xu (including)
IosCisco12.3xv (including)12.3xv (including)
IosCisco12.3xw (including)12.3xw (including)
IosCisco12.3xx (including)12.3xx (including)
IosCisco12.3xy (including)12.3xy (including)
IosCisco12.3xz (including)12.3xz (including)
IosCisco12.3ya (including)12.3ya (including)
IosCisco12.3yc (including)12.3yc (including)
IosCisco12.3yd (including)12.3yd (including)
IosCisco12.3ye (including)12.3ye (including)
IosCisco12.3yf (including)12.3yf (including)
IosCisco12.3yg (including)12.3yg (including)
IosCisco12.3yh (including)12.3yh (including)
IosCisco12.3yj (including)12.3yj (including)
IosCisco12.3yl (including)12.3yl (including)

Potential Mitigations

References

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