Vulnerability Monitor

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CVE-2005-1021

Memory leak in Secure Shell (SSH) in Cisco IOS 12.0 through 12.3, when authenticating against a TACACS+ server, allows remote attackers to cause a denial of service (memory consumption) via an incorrect username or password.

Published

2005-05-02T04:00:00.000

Last Modified

2025-04-03T01:03:51.193

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 7.1 (HIGH)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:N/I:N/A:C

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: NONE
  • Integrity Impact: NONE
  • Availability Impact: COMPLETE
Exploitability Score

8.6

Impact Score

6.9

Weaknesses
  • Type: Primary
    CWE-399
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System cisco ios 12.0s Yes
Operating System cisco ios 12.0sx Yes
Operating System cisco ios 12.1ax Yes
Operating System cisco ios 12.1az Yes
Operating System cisco ios 12.1db Yes
Operating System cisco ios 12.1dc Yes
Operating System cisco ios 12.1e Yes
Operating System cisco ios 12.1ea Yes
Operating System cisco ios 12.1eb Yes
Operating System cisco ios 12.1ec Yes
Operating System cisco ios 12.1eu Yes
Operating System cisco ios 12.1ew Yes
Operating System cisco ios 12.1ex Yes
Operating System cisco ios 12.1t Yes
Operating System cisco ios 12.1xd Yes
Operating System cisco ios 12.1xe Yes
Operating System cisco ios 12.1xf Yes
Operating System cisco ios 12.1xg Yes
Operating System cisco ios 12.1xh Yes
Operating System cisco ios 12.1xi Yes
Operating System cisco ios 12.1xl Yes
Operating System cisco ios 12.1xm Yes
Operating System cisco ios 12.1xp Yes
Operating System cisco ios 12.1xq Yes
Operating System cisco ios 12.1xr Yes
Operating System cisco ios 12.1xt Yes
Operating System cisco ios 12.1xu Yes
Operating System cisco ios 12.1xv Yes
Operating System cisco ios 12.1ya Yes
Operating System cisco ios 12.1yb Yes
Operating System cisco ios 12.1yc Yes
Operating System cisco ios 12.1yd Yes
Operating System cisco ios 12.1ye Yes
Operating System cisco ios 12.1yf Yes
Operating System cisco ios 12.1yh Yes
Operating System cisco ios 12.1yi Yes
Operating System cisco ios 12.2 Yes
Operating System cisco ios 12.2b Yes
Operating System cisco ios 12.2dd Yes
Operating System cisco ios 12.2dx Yes
Operating System cisco ios 12.2eu Yes
Operating System cisco ios 12.2ew Yes
Operating System cisco ios 12.2ewa Yes
Operating System cisco ios 12.2ex Yes
Operating System cisco ios 12.2s Yes
Operating System cisco ios 12.2se Yes
Operating System cisco ios 12.2sea Yes
Operating System cisco ios 12.2seb Yes
Operating System cisco ios 12.2su Yes
Operating System cisco ios 12.2sv Yes
Operating System cisco ios 12.2sx Yes
Operating System cisco ios 12.2sxa Yes
Operating System cisco ios 12.2sxb Yes
Operating System cisco ios 12.2sxd Yes
Operating System cisco ios 12.2sy Yes
Operating System cisco ios 12.2sz Yes
Operating System cisco ios 12.2t Yes
Operating System cisco ios 12.2xa Yes
Operating System cisco ios 12.2xc Yes
Operating System cisco ios 12.2xf Yes
Operating System cisco ios 12.2xn Yes
Operating System cisco ios 12.2xs Yes
Operating System cisco ios 12.2ye Yes
Operating System cisco ios 12.2yk Yes
Operating System cisco ios 12.2yo Yes
Operating System cisco ios 12.2yx Yes
Operating System cisco ios 12.2yz Yes
Operating System cisco ios 12.2za Yes
Operating System cisco ios 12.3t Yes
Operating System cisco ios 12.3xd Yes
Operating System cisco ios 12.3xe Yes
Operating System cisco ios 12.3xf Yes
Operating System cisco ios 12.3xg Yes
Operating System cisco ios 12.3xh Yes
Operating System cisco ios 12.3xi Yes
Operating System cisco ios 12.3xj Yes
Operating System cisco ios 12.3xk Yes
Operating System cisco ios 12.3xl Yes
Operating System cisco ios 12.3xm Yes
Operating System cisco ios 12.3xq Yes
Operating System cisco ios 12.3xr Yes
Operating System cisco ios 12.3xs Yes
Operating System cisco ios 12.3xu Yes
Operating System cisco ios 12.3xw Yes
Operating System cisco ios 12.3xx Yes
Operating System cisco ios 12.3xy Yes
Operating System cisco ios 12.3ya Yes
Operating System cisco ios 12.3yd Yes
Operating System cisco ios 12.3yf Yes
Operating System cisco ios 12.3yg Yes
Operating System cisco ios 12.3yh Yes
Operating System cisco ios 12.3yj Yes
Operating System cisco ios 12.3yk Yes
References