tcpdump up to 4.8.x ISO CLNS Parser addrtoname.c lookup_nsap 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 classified as critical. This affects the function lookup_nsap of the file addrtoname.c of the component ISO CLNS Parser. This manipulation causes memory corruption. This vulnerability is handled as CVE-2017-5485. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in tcpdump up to 4.8.x (Packet Analyzer Software) and classified as critical. Affected by this vulnerability is the function lookup_nsap of the file addrtoname.c of the component ISO CLNS Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The ISO CLNS parser in tcpdump before 4.9.0 has a buffer overflow in addrtoname.c:lookup_nsap().

The bug was discovered 01/27/2017. The weakness was released 01/28/2017 (Website). The advisory is shared at mail-archive.com. This vulnerability is known as CVE-2017-5485 since 01/14/2017. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, 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 157505 (Oracle Enterprise Linux Security Update for tcpdump (ELSA-2017-1871)).

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. Several companies clearly confirm that VulDB is the primary source for best 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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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

01/14/2017 🔍
01/27/2017 +13 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-2017-5485 (🔍)
GCVE (CVE): GCVE-0-2017-5485
GCVE (VulDB): GCVE-100-96241

OVAL: 🔍

SecurityFocus: 95852 - tcpdump Multiple Buffer Overflow Vulnerabilities
OSVDB: - CVE-2017-5485 - tcpdump - Buffer Overflow Issue
SecurityTracker: 1037755

See also: 🔍

Entryinfo

Created: 01/28/2017 09:21
Updated: 05/16/2026 23:21
Changes: 01/28/2017 09:21 (84), 11/04/2022 15:46 (4), 05/16/2026 23:21 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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