tcpdump up to 4.9.1 LLDP Parser print-lldp.c lldp_private_8021_print resource management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.8$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as problematic, was found in tcpdump up to 4.9.1. Affected by this vulnerability is the function lldp_private_8021_print of the file print-lldp.c of the component LLDP Parser. Executing a manipulation can lead to resource management. This vulnerability is tracked as CVE-2017-12997. The attack can be launched remotely. No exploit exists. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in tcpdump up to 4.9.1 (Packet Analyzer Software). It has been declared as problematic. This vulnerability affects the function lldp_private_8021_print of the file print-lldp.c of the component LLDP Parser. The manipulation with an unknown input leads to a resource management vulnerability. The CWE definition for the vulnerability is CWE-399. As an impact it is known to affect availability. CVE summarizes:

The LLDP parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-lldp.c:lldp_private_8021_print().

The bug was discovered 09/11/2017. The weakness was disclosed 09/14/2017 (Website). The advisory is shared for download at securitytracker.com. This vulnerability was named CVE-2017-12997 since 08/21/2017. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 3 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 103257 (Debian DLA-1097-1 : 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 and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 370625 (Apple macOS High Sierra 10.13.1, Security Update 2017-001 Sierra, and Security Update 2017-004 El Capitan Not Installed).

Upgrading to version 4.9.2 eliminates this vulnerability. A possible mitigation has been published 1 days after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (103257) and SecurityFocus (BID 100914†). The entries VDB-21822, VDB-21823, VDB-106590 and VDB-106591 are pretty similar. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / 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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Nessus ID: 103257
Nessus Name: Debian DLA-1097-1 : tcpdump security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 53377
OpenVAS Name: Debian Security Advisory DSA 3971-1 (tcpdump - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: tcpdump 4.9.2
Patch: github.com

Timelineinfo

08/21/2017 🔍
09/11/2017 +21 days 🔍
09/13/2017 +2 days 🔍
09/14/2017 +1 days 🔍
09/14/2017 +0 days 🔍
09/14/2017 +0 days 🔍
09/15/2017 +1 days 🔍
09/18/2017 +3 days 🔍
12/05/2025 +2999 days 🔍

Sourcesinfo

Product: tcpdump.org

Advisory: 34cec721d39c76be1e0a600829a7b17bdfb832b6⛔
Researcher: Otto Airamo, Antti Levomäki.
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-12997 (🔍)
GCVE (CVE): GCVE-0-2017-12997
GCVE (VulDB): GCVE-100-106612

OVAL: 🔍

SecurityFocus: 100914 - Tcpdump CVE-2017-12997 Denial of Service Vulnerability
SecurityTracker: 1039307

See also: 🔍

Entryinfo

Created: 09/14/2017 17:20
Updated: 12/05/2025 00:21
Changes: 09/14/2017 17:20 (78), 11/16/2019 08:44 (4), 01/12/2021 16:37 (2), 01/12/2021 16:39 (1), 12/28/2022 16:34 (4), 09/07/2024 00:31 (16), 12/05/2025 00:21 (3)
Complete: 🔍
Cache ID: 216::103

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