tcpdump 4.9.2 print-hncp.c print_prefix Crafted Packet out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability was found in tcpdump 4.9.2. It has been classified as critical. This vulnerability affects the function print_prefix of the file print-hncp.c. The manipulation as part of Crafted Packet leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2018-19519. Local access is required to approach this attack. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in tcpdump 4.9.2 (Packet Analyzer Software). It has been rated as critical. This issue affects the function print_prefix of the file print-hncp.c. The manipulation as part of a Crafted Packet leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

In tcpdump 4.9.2, a stack-based buffer over-read exists in the print_prefix function of print-hncp.c via crafted packet data because of missing initialization.

The bug was discovered 11/19/2018. The weakness was disclosed 11/25/2018 (Website). The advisory is shared at github.com. The identification of this vulnerability is CVE-2018-19519 since 11/25/2018. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 6 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 119715 (openSUSE Security Update : tcpdump (openSUSE-2018-1559)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171952 (OpenSUSE Security Update for tcpdump (openSUSE-SU-2018:4144-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (119715) and SecurityFocus (BID 106098†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

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

NVD Base Score: 5.5
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: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 119715
Nessus Name: openSUSE Security Update : tcpdump (openSUSE-2018-1559)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

11/19/2018 🔍
11/25/2018 +6 days 🔍
11/25/2018 +0 days 🔍
11/25/2018 +0 days 🔍
11/26/2018 +1 days 🔍
12/03/2018 +7 days 🔍
12/15/2018 +12 days 🔍
12/17/2018 +2 days 🔍
06/11/2023 +1637 days 🔍

Sourcesinfo

Product: tcpdump.org

Advisory: RHSA-2019:3976
Status: Not defined

CVE: CVE-2018-19519 (🔍)
GCVE (CVE): GCVE-0-2018-19519
GCVE (VulDB): GCVE-100-127097
SecurityFocus: 106098 - Tcpdump CVE-2018-19519 Stack Based Buffer Overflow Vulnerability

Entryinfo

Created: 11/26/2018 09:50
Updated: 06/11/2023 11:57
Changes: 11/26/2018 09:50 (74), 04/14/2020 17:10 (5), 06/11/2023 11:57 (4)
Complete: 🔍
Cache ID: 216::103

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

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