Monit Overly Long HTTP Request Buffer Overrun Vulnerability

BID:9099

Info

Monit Overly Long HTTP Request Buffer Overrun Vulnerability

Bugtraq ID: 9099
Class: Boundary Condition Error
CVE:
Remote: Yes
Local: No
Published: Nov 24 2003 12:00AM
Updated: Nov 24 2003 12:00AM
Credit: The discovery of this vulnerability is credited to Evgeny Legerov <[email protected]>.
Vulnerable: TildeSlash Monit 4.1
TildeSlash Monit 4.0
TildeSlash Monit 3.2
TildeSlash Monit 3.1
TildeSlash Monit 3.0
TildeSlash Monit 2.4.3
TildeSlash Monit 2.4.2
TildeSlash Monit 2.4.1
TildeSlash Monit 2.4
TildeSlash Monit 2.3
TildeSlash Monit 2.2.1
TildeSlash Monit 2.2
TildeSlash Monit 2.1.1
TildeSlash Monit 2.1
TildeSlash Monit 2.0
TildeSlash Monit 1.4.1
TildeSlash Monit 1.4
Not Vulnerable: TildeSlash Monit 4.1.1
TildeSlash Monit 1.3.1
TildeSlash Monit 1.3
TildeSlash Monit 1.2
TildeSlash Monit 1.1
TildeSlash Monit 1.0

Discussion

Monit Overly Long HTTP Request Buffer Overrun Vulnerability

A buffer overrun vulnerability has been discovered in Monit 4.1 and earlier that could be exploited remotely to gain root privileges. The problem occurs due to insufficient bounds checking when handling overly long HTTP requests. As a result, it may be possible for a remote attacker to corrupt sensitive process data in such a way that the execution flow of Monit can be controlled.

Successful exploitation of this condition could potentially allow for the execution of arbitrary code with root privileges.

Exploit / POC

Monit Overly Long HTTP Request Buffer Overrun Vulnerability

Proof of concept has been submitted by gsicht gsicht <[email protected]>.

Exploit code has been provided by Michel Blomgren <[email protected]>.

Solution / Fix

Monit Overly Long HTTP Request Buffer Overrun Vulnerability

Solution:
The vendor has release Monit 4.1.1 to address this issue in affected versions. Users are advised to upgrade to the latest version as soon as possible.

Gentoo has released an advisory GLSA 200403-14 to address this and another issue in Monit. Please see the referenced advisory for more information. Gentoo users may carry out the following commands to upgrade to Monit version 4.2:

# emerge sync
# emerge -pv ">=app-admin/monit-4.2"
# emerge ">=app-admin/monit-4.2"


TildeSlash Monit 1.4

TildeSlash Monit 1.4.1

TildeSlash Monit 2.0

TildeSlash Monit 2.1

TildeSlash Monit 2.1.1

TildeSlash Monit 2.2

TildeSlash Monit 2.2.1

TildeSlash Monit 2.3

TildeSlash Monit 2.4

TildeSlash Monit 2.4.1

TildeSlash Monit 2.4.2

TildeSlash Monit 2.4.3

TildeSlash Monit 3.0

TildeSlash Monit 3.1

TildeSlash Monit 3.2

TildeSlash Monit 4.0

TildeSlash Monit 4.1

References

Monit Overly Long HTTP Request Buffer Overrun Vulnerability

References:

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