Cisco CatOS up to 4.5(13a)/5.5(13)/6.3(4)/7.1(2) memory corruption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
9.0 | $0-$5k | 0.00 |
A vulnerability has been found in Cisco CatOS up to 4.5(13a)/5.5(13)/6.3(4)/7.1(2) and classified as critical. This vulnerability affects an unknown code block. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:
Buffer overflow in BSD-based telnetd telnet daemon on various operating systems allows remote attackers to execute arbitrary commands via a set of options including AYT (Are You There), which is not properly handled by the telrcv function.
The weakness was disclosed 01/01/2002 (Website). The advisory is shared for download at securityfocus.com. This vulnerability was named CVE-2001-0554. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are unknown but a public exploit is available.
A public exploit has been developed in ANSI C. It is possible to download the exploit at securityfocus.com. It is declared as proof-of-concept. As 0-day the estimated underground price was around $25k-$100k. The vulnerability scanner Nessus provides a plugin with the ID 10986 (Cisco CatOS Telnet Option Handling Overflow (CSCdw19195)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CISCO and running in the context l.
Upgrading eliminates this vulnerability. Attack attempts may be identified with Snort ID 1252.
The vulnerability is also documented in the vulnerability database at Tenable (10986). The entry 17165 is pretty similar.
Product
Vendor
Name
Version
License
Support
- end of life (old version)
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 10.0VulDB Meta Temp Score: 9.0
VulDB Base Score: 10.0
VulDB Temp Score: 9.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
AV | AC | Au | C | I | A |
---|---|---|---|---|---|
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
---|---|---|---|---|---|
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Memory corruptionCWE: CWE-119
ATT&CK: Unknown
Local: No
Remote: Yes
Availability: 🔍
Access: Public
Status: Proof-of-Concept
Programming Language: 🔍
Download: 🔍
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Nessus ID: 10986
Nessus Name: Cisco CatOS Telnet Option Handling Overflow (CSCdw19195)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
OpenVAS ID: 860233
OpenVAS Name: TESO in.telnetd buffer overflow
OpenVAS File: 🔍
OpenVAS Family: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Snort ID: 1252
Snort Message: PROTOCOL-TELNET bsd telnet exploit response
Snort Class: 🔍
Timeline
07/18/2001 🔍08/14/2001 🔍
01/01/2002 🔍
01/01/2002 🔍
06/05/2002 🔍
09/11/2003 🔍
07/01/2016 🔍
08/26/2022 🔍
Sources
Vendor: cisco.comAdvisory: securityfocus.com⛔
Status: Not defined
CVE: CVE-2001-0554 (🔍)
OVAL: 🔍
X-Force: 6875
Vulnerability Center: 2091 - Buffer Overflow in Cisco Catalyst Switches Running Certain Cisco CatOS, High
SecurityFocus: 3064 - Multiple Vendor Telnetd Buffer Overflow Vulnerability
OSVDB: 809
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 07/01/2016 17:47Updated: 08/26/2022 09:13
Changes: 07/01/2016 17:47 (57), 02/15/2019 12:54 (19), 08/26/2022 09:13 (2)
Complete: 🔍
No comments yet. Languages: en.
Please log in to comment.