Vulnerability CVE-2011-1770
Published: 2011-06-24   Modified: 2012-02-13

Description:
Integer underflow in the dccp_parse_options function (net/dccp/options.c) in the Linux kernel before 2.6.33.14 allows remote attackers to cause a denial of service via a Datagram Congestion Control Protocol (DCCP) packet with an invalid feature options length, which triggers a buffer over-read.

See advisories in our WLB2 database:
Topic
Author
Date
High
linux kernel 2.6.33.13 dccp handle invalid feature options length
Dan Rosenberg
01.07.2011

Type:

CWE-189

 (Numeric Errors)

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

CVSS Base Score
Impact Subscore
Exploitability Subscore
7.8/10
6.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Complete
Affected software
Linux -> Kernel 

 References:
https://bugzilla.redhat.com/show_bug.cgi?id=703011
http://marc.info/?l=linux-kernel&m=130469305815140&w=2
http://marc.info/?l=linux-kernel&m=130468845209036&w=2
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061366.html
http://www.securitytracker.com/id?1025592
http://www.securityfocus.com/bid/47769
http://www.kernel.org/pub/linux/kernel/v2.6/longterm/v2.6.33/ChangeLog-2.6.33.14
http://securityreason.com/securityalert/8286
http://secunia.com/advisories/44932
http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061236.html
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