Vulnerability CVE-2015-3294
Published: 2015-05-08

Description:
The tcp_request function in Dnsmasq before 2.73rc4 does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and crash) via a malformed DNS request.

See advisories in our WLB2 database:
Topic
Author
Date
Low
Dnsmasq 2.72 Unchecked Return Value
Nick Sampanis
24.04.2015

Type:

CWE-19

 (Data Handling)

CVSS2 => (AV:N/AC:L/Au:N/C:P/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
6.4/10
4.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
Partial
None
Partial
Affected software
Thekelleys -> Dnsmasq 
Oracle -> Solaris 

 References:
http://lists.opensuse.org/opensuse-updates/2015-05/msg00013.html
http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q2/009382.html
http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q2/009387.html
http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commitdiff;h=ad4a8ff7d9097008d7623df8543df435bfddeac8
http://www.debian.org/security/2015/dsa-3251
http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html
http://www.securityfocus.com/archive/1/535354/100/1100/threaded
http://www.securityfocus.com/bid/74452
http://www.securitytracker.com/id/1032195
http://www.ubuntu.com/usn/USN-2593-1
https://security.gentoo.org/glsa/201512-01
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