CVE-2018-19519

tcpdump: Stack-based buffer over-read in print-hncp.c:print_prefix() via crafted pcap

Severity Score

5.5

*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

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.

En la versión 4.9.2 de tcpdump, existe un una sobrelectura de búfer basada en pila en la función print_prefix de print-hncp.c mediante un paquete de datos manipulado debido a la falta de una inicialización.

USN-4252-1 fixed several vulnerabilities in tcpdump. This update provides the corresponding update for Ubuntu 12.04 ESM and Ubuntu 14.04 ESM. Multiple security issues were discovered in tcpdump. A remote attacker could use these issues to cause tcpdump to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

*Credits: N/A

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2018-11-25 CVE Reserved
2018-11-25 CVE Published
2024-08-05 CVE Updated
2024-08-05 First Exploit
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-125: Out-of-bounds Read
CWE-909: Missing Initialization of Resource

CAPEC

References (11)

URL	Tag	Source
http://www.securityfocus.com/bid/106098	Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44516	X_refsource_confirm

URL	Date	SRC
https://github.com/zyingp/temp/blob/master/tcpdump.md	2024-08-05

URL	Date	SRC

URL	Date	SRC
https://access.redhat.com/errata/RHSA-2019:3976	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62XY42U6HY3H2APR5EHNWCZ7SAQNMMJN	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNYXF3IY2X65IOD422SA6EQUULSGW7FN	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2UDPOSGVJQIYC33SQBXMDXHH4QDSDMU	2023-11-07
https://usn.ubuntu.com/4252-1	2023-11-07
https://usn.ubuntu.com/4252-2	2023-11-07
https://access.redhat.com/security/cve/CVE-2018-19519	2020-04-28
https://bugzilla.redhat.com/show_bug.cgi?id=1655374	2020-04-28

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Tcpdump Search vendor "Tcpdump"		Tcpdump Search vendor "Tcpdump" for product "Tcpdump"				4.9.2 Search vendor "Tcpdump" for product "Tcpdump" and version "4.9.2"		-		Affected