CVE-2005-1021

Description

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.

Category

7.1
CVSS
Severity: High
CVSS 2.0 •
EPSS 1.40% Top 25%
Vendor Advisory cisco.com Vendor Advisory secunia.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/alerts/2005/Apr/1013655.html vdb entry patch
https://exchange.xforce.ibmcloud.com/vulnerabilities/19991 vdb entry
http://www.osvdb.org/15303 vdb entry
http://www.securityfocus.com/bid/13042 vdb entry
http://secunia.com/advisories/14854 third party advisory patch vendor advisory
http://www.cisco.com/warp/public/707/cisco-sa-20050406-ssh.shtml vendor advisory
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5687 vdb entry signature

Frequently Asked Questions

What is the severity of CVE-2005-1021?
CVE-2005-1021 has been scored as a high severity vulnerability.
How to fix CVE-2005-1021?
To fix CVE-2005-1021, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2005-1021 being actively exploited in the wild?
It is possible that CVE-2005-1021 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.