Up.time agent for Linux does not authenticate a user before allowing read access to the file system
Original Release date: 19 May 2016 | Last revised: 19 May 2016

Overview
The up.time agent for Linux versions 7.5 and 7.6 may allow an authenticated remote attacker to read arbitrary files from a system.

Description
CWE-306: Missing Authentication for Critical Function – CVE-2015-8268
According to the researcher, “The linux based uptime.agent version 7.5 provides the ability to remotely read any file on the remote system that the uptime.agent has read access to, without authentication.” Idera has identified that versions 7.5 and 7.6 are affected.Related vulnerabilities were initially reported in VU#377260.
Impact
An unauthenticated remote user may be able to read arbitrary files from a system running the Up.time agent for Linux.
Solution
Apply an updateIdera has released Up.time version 7.7 which addresses this issue.

Affected users are encouraged to update to the latest available version as soon as possible.Affected users should also consider the following mitigations for this and other vulnerabilities.Check configurationAccording to Idera, affected users may also use the following configuration settings to mitigate these issues:1.

All agents run in a read only mode by default, where they can only poll metrics.2.
In order to use custom scripts or trigger recovery actions, you need to set a password on the agent, or add commands to the .uptmpasswd file for the linux agent.3.

Agents communication can be encrypted with SSL by using various SSL Tunneling/Proxy Utilities (openSSL, etc). KB articles cover the specifics for implementing with Stunnel on various platforms.4.

Agents running under xinet.d can also be secured at the service level by restricting incoming connections to only accept connections from the Monitoring Station, or limit the total number of connections, etc.5.

Disable Agent Commands you don’t use either via the Agent Console or editing conf/agent_commands.txt.
Vendor Information (Learn More)

VendorStatusDate NotifiedDate UpdatedIderaAffected11 Dec 201516 May 2016If you are a vendor and your product is affected, let
us know.

CVSS Metrics (Learn More)

Group
Score
Vector
Base
7.8
AV:N/AC:L/Au:N/C:C/I:N/A:N
Temporal
6.1
E:POC/RL:OF/RC:C
Environmental
4.6
CDP:ND/TD:M/CR:ND/IR:ND/AR:ND

References

Credit

Thanks to Ryan Wincey for reporting this vulnerability.
This document was written by Garret Wassermann.

Other Information

CVE IDs:
CVE-2015-8268

Date Public:
11 May 2016

Date First Published:
19 May 2016

Date Last Updated:
19 May 2016

Document Revision:
27

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