Vulnerability Details

Dnsmasq TFTP Service multiple vulnerabilities

Published: 2009-09-02 09:12:57
CVE Author: NIST National Vulnerability Database

CVSS Base Vector:
AV:N/AC:M/Au:N/C:P/I:P/A:P

Impact:
Remote attackers can exploit this issue to execute arbitrary machine code in the context of the vulnerable software on the targeted user's computer. Dnsmasq is also prone to a NULL-pointer dereference vulnerability. An attacker can exploit this issue to crash the affected application, denying service to legitimate users.

Affected Versions:
dnsmasq versions 2.40 up to 2.49. Older versions are probably affected too, but they were not checked.

Recommendations:
Updates are available. Please see the references for more information.

Summary:
Dnsmasq is prone to a remotely exploitable heap-overflow vulnerability because the software fails to properly bounds-check user-supplied input before copying it into an insufficiently sized memory buffer.

Technical Details:
NOTE: The TFTP service must be enabled for this issue to be exploitable. This is not the default.

Detection Type:
Remote Banner Unreliable

Solution Type:
Vendor Patch

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2009-2957
https://nvd.nist.gov/vuln/detail/CVE-2009-2958

SecurityFocus Bugtraq ID:

https://www.securityfocus.com/bid/36121
https://www.securityfocus.com/bid/36120

References:

http://www.securityfocus.com/bid/36121
http://www.securityfocus.com/bid/36120
http://www.thekelleys.org.uk/dnsmasq/doc.html
http://www.coresecurity.com/content/dnsmasq-vulnerabilities

Severity
Medium
CVSS Score
6.8
Published
2009-09-02
Modified
2019-01-21
Category
Buffer overflow

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