tcpdump up to 4.9.2 SMB Parser smbutil.c smb_fdata recursion

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in tcpdump up to 4.9.2 and classified as problematic. This issue affects the function smb_fdata of the file smbutil.c of the component SMB Parser. Such manipulation leads to recursion. This vulnerability is documented as CVE-2018-16452. The attack can be executed remotely. There is not any exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in tcpdump up to 4.9.2 (Packet Analyzer Software) and classified as problematic. Affected by this issue is the function smb_fdata of the file smbutil.c of the component SMB Parser. The manipulation with an unknown input leads to a recursion vulnerability. Using CWE to declare the problem leads to CWE-674. The product does not properly control the amount of recursion that takes place, consuming excessive resources, such as allocated memory or the program stack. Impacted is availability. CVE summarizes:

The SMB parser in tcpdump before 4.9.3 has stack exhaustion in smbutil.c:smb_fdata() via recursion.

The weakness was released 10/03/2019 (GitHub Repository). The advisory is shared for download at github.com. This vulnerability is handled as CVE-2018-16452 since 09/03/2018. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

Upgrading to version 4.9.3 eliminates this vulnerability.

Entries connected to this vulnerability are available at VDB-142915, VDB-142913 and VDB-142912. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Recursion
CWE: CWE-674 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: tcpdump 4.9.3
Patch: github.com

Timelineinfo

09/03/2018 🔍
10/03/2019 +395 days 🔍
10/04/2019 +1 days 🔍
12/03/2025 +2252 days 🔍

Sourcesinfo

Product: tcpdump.org

Advisory: 24182d959f661327525a20d9a94c98a8ec016778
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-16452 (🔍)
GCVE (CVE): GCVE-0-2018-16452
GCVE (VulDB): GCVE-100-142916
See also: 🔍

Entryinfo

Created: 10/04/2019 09:04
Updated: 12/03/2025 21:26
Changes: 10/04/2019 09:04 (59), 09/21/2020 09:36 (1), 01/03/2024 09:14 (5), 01/03/2024 09:17 (1), 12/03/2025 21:26 (20)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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