Cisco IOS up to 11.2p PPP CHAP Authentication privileges management
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.0 | $0-$5k | 0.00 |
A vulnerability, which was classified as critical, was found in Cisco IOS up to 11.2p (Router Operating System). This affects an unknown part of the component PPP CHAP Authentication Handler. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
some classic cisco ios devices have a vulnerability in the ppp chap authentication to establish unauthorized ppp connections.
The bug was discovered 10/01/1997. The weakness was shared 10/01/1997 by FIRST with Cisco (Website). The advisory is shared at cisco.com. This vulnerability is uniquely identified as CVE-1999-0160. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.
The vulnerability scanner Nessus provides a plugin with the ID 48944 (Cisco CHAP Authentication Vulnerabilities - Cisco Systems), 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. A possible mitigation has been published immediately after the disclosure of the vulnerability.
The vulnerability is also documented in the databases at X-Force (570) and Tenable (48944).
Product
Type
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: 7.3VulDB Meta Temp Score: 7.0
VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
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VulDB Reliability: 🔍
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Exploiting
Class: Privileges managementCWE: CWE-269 / CWE-266
ATT&CK: T1068
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Nessus ID: 48944
Nessus Name: Cisco CHAP Authentication Vulnerabilities - Cisco Systems
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍
Timeline
10/01/1997 🔍10/01/1997 🔍
10/01/1997 🔍
10/01/1997 🔍
10/01/1997 🔍
10/01/1997 🔍
01/22/2003 🔍
02/21/2003 🔍
09/01/2010 🔍
06/18/2014 🔍
05/08/2019 🔍
Sources
Vendor: cisco.comAdvisory: cisco.com
Researcher: FIRST
Organization: Cisco
Status: Not defined
CVE: CVE-1999-0160 (🔍)
OVAL: 🔍
X-Force: 570
Vulnerability Center: 691 - [cisco-sa-19971001-chap] Cisco IOS PPP CHAP Authentication Vulnerabilities, High
SecurityFocus: 693 - Cisco IOS CHAP Authentication Vulnerabilities
OSVDB: 1099 - Cisco IOS CHAP Authentication Bypass
Entry
Created: 06/18/2014 16:19Updated: 05/08/2019 09:42
Changes: 06/18/2014 16:19 (69), 05/08/2019 09:42 (5)
Complete: 🔍
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