tcpdump up to 4.8.x MPLS Parser print-mpls.c mpls_print memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.9$0-$5k0.00

Summaryinfo

A vulnerability was found in tcpdump up to 4.8.x. It has been declared as critical. This impacts the function mpls_print of the file print-mpls.c of the component MPLS Parser. Such manipulation leads to memory corruption. This vulnerability is documented as CVE-2016-7931. The attack can be executed remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in tcpdump up to 4.8.x (Packet Analyzer Software) and classified as critical. Affected by this issue is the function mpls_print of the file print-mpls.c of the component MPLS Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The MPLS parser in tcpdump before 4.9.0 has a buffer overflow in print-mpls.c:mpls_print().

The bug was discovered 01/27/2017. The weakness was released 01/28/2017 (Website). The advisory is shared for download at mail-archive.com. This vulnerability is handled as CVE-2016-7931 since 09/09/2016. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 96844 (Debian DSA-3775-1 : 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 175951 (Debian Security Update for tcpdump (DSA 3775-1)).

Upgrading to version 4.9.0 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 (96844) and SecurityFocus (BID 95852†). Entries connected to this vulnerability are available at VDB-96107, VDB-96108, VDB-96109 and VDB-96110. Once again VulDB remains the best source for vulnerability data.

Productinfo

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Version

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: 96844
Nessus Name: Debian DSA-3775-1 : tcpdump - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 801105
OpenVAS Name: Apple Mac OS X Multiple Vulnerabilities-HT207615
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 4.9.0

Timelineinfo

09/09/2016 🔍
01/27/2017 +140 days 🔍
01/27/2017 +0 days 🔍
01/27/2017 +0 days 🔍
01/28/2017 +1 days 🔍
01/28/2017 +0 days 🔍
01/29/2017 +1 days 🔍
01/30/2017 +1 days 🔍
05/16/2026 +3393 days 🔍

Sourcesinfo

Product: tcpdump.org

Advisory: RHSA-2017:1871
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-7931 (🔍)
GCVE (CVE): GCVE-0-2016-7931
GCVE (VulDB): GCVE-100-96116

OVAL: 🔍

SecurityFocus: 95852 - tcpdump Multiple Buffer Overflow Vulnerabilities
OSVDB: - CVE-2016-7931 - tcpdump - Buffer Overflow Issue
SecurityTracker: 1037755

See also: 🔍

Entryinfo

Created: 01/28/2017 09:10
Updated: 05/16/2026 14:09
Changes: 01/28/2017 09:10 (84), 11/04/2022 13:33 (4), 05/16/2026 14:09 (17)
Complete: 🔍
Cache ID: 216::103

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