VAR-200509-0051
Vulnerability from variot - Updated: 2025-04-03 22:42Avocent CCM console server running firmware 2.1 CCM4850 allows remote authenticated attackers to bypass port restrictions by connecting to the server via SSH and using the connect command to access the serial port. Avocent CCM is prone to a vulnerability that permits the bypass of access control to privileged ports. This issue is due to a failure in the application to perform proper authorization before granting access to internal functions. An attacker can exploit this vulnerability to bypass access control and gain privileged access to ports and devices connected to the vulnerable appliance. Avocent CCM is a multi-computer controller.
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TITLE: Avocent CCM Port Access Control Bypass Vulnerability
SECUNIA ADVISORY ID: SA16836
VERIFY ADVISORY: http://secunia.com/advisories/16836/
CRITICAL: Less critical
IMPACT: Security Bypass
WHERE:
From remote
OPERATING SYSTEM: Avocent CCM XX50 http://secunia.com/product/5714/
DESCRIPTION: Dirk Wetter has reported a vulnerability in Avocent CCM, which can be exploited by malicious users to bypass certain security restrictions.
The vulnerability has been reported in CCM4850 with firmware 2.1.
SOLUTION: Update to firmware version 2.3. ftp://ftp.avocent.com/public/product-upgrades/$ds1800/CCMx50%20Series/CCMx50%27s_AV_2.3/
PROVIDED AND/OR DISCOVERED BY: Dirk Wetter
ORIGINAL ADVISORY: http://drwetter.org/cs-probs/avocent-sshbug.txt
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Subscribe: http://secunia.com/secunia_security_advisories/
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
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Drag nodes to arrange them. Double-click a related vulnerability to open it, or a source to visit its link. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows nodes by kind and by sighting type.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Vulnerability timeline
Sightings and recorded dates, grouped by day · UTC
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Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.
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