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Tcpdump CVE-2019-1010220

LOW
Buffer Over-read (CWE-126)
2019-07-22 josh@bress.net
3.3
CVSS 3.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Buffer over-read prevention
Impact

CVSS score of 3.3 (LOW). Attack characteristics: local attack vector, low complexity, no privileges required, user interaction required.

Exploit ScenarioDerived

Successful exploitation could compromise the low-severity affected system.

Monitor Track and reassess. Why: LOW severity (CVSS 0.1-3.9).
Patch available 1.3% exploitation probability (EPSS)

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AnalysisAI

tcpdump.org tcpdump 4.9.2 is affected by: CWE-126: Buffer Over-read. Rated low severity (CVSS 3.3), this vulnerability is no authentication required, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-126. tcpdump.org tcpdump 4.9.2 is affected by: CWE-126: Buffer Over-read. The impact is: May expose Saved Frame Pointer, Return Address etc. on stack. The component is: line 234: "ND_PRINT((ndo, "%s", buf));", in function named "print_prefix", in "print-hncp.c". The attack vector is: The victim must open a specially crafted pcap file. Affected products include: Tcpdump.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 3.3 LOW
AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

DescriptionNVD

tcpdump.org tcpdump 4.9.2 is affected by: CWE-126: Buffer Over-read. The impact is: May expose Saved Frame Pointer, Return Address etc. on stack. The component is: line 234: "ND_PRINT((ndo, "%s", buf));", in function named "print_prefix", in "print-hncp.c". The attack vector is: The victim must open a specially crafted pcap file.

Threat Intelligence Overview

EPSS Score
1.3%
Top 32% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity LOW
CISA KEV No
Public POC No
EPSS 1.3%
Patch available Yes
Active threat No
Deciding rule
LOW severity (CVSS 0.1-3.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Defer
Exploitation· derived
None
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
Low

Priority Score

17
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +16
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.

Affected Products (CPE)NVD

cpe:2.3:a:tcpdump:tcpdump:4.9.2:*:*:*:*:*:*:*
CVE-2017-11543 CRITICAL POC
9.8 Jul 23

tcpdump 4.9.0 has a buffer overflow in the sliplink_print function in print-sl.c. Rated critical severity (CVSS 9.8), th

CVE-2014-8768 MEDIUM POC
5.0 Nov 20

Multiple Integer underflows in the geonet_print function in tcpdump 4.5.0 through 4.6.2, when in verbose mode, allow rem

CVE-2017-11542 CRITICAL POC
9.8 Jul 23

tcpdump 4.9.0 has a heap-based buffer over-read in the pimv1_print function in print-pim.c. Rated critical severity (CVS

CVE-2017-11541 CRITICAL POC
9.8 Jul 23

tcpdump 4.9.0 has a heap-based buffer over-read in the lldp_print function in print-lldp.c, related to util-print.c. Rat

CVE-2015-2153 MEDIUM POC
5.0 Mar 24

The rpki_rtr_pdu_print function in print-rpki-rtr.c in the TCP printer in tcpdump before 4.7.2 allows remote attackers t

CVE-2014-8769 MEDIUM POC
6.4 Nov 20

tcpdump 3.8 through 4.6.2 might allow remote attackers to obtain sensitive information from memory or cause a denial of

CVE-2017-5342 CRITICAL
9.8 Jan 28

In tcpdump before 4.9.0, a bug in multiple protocol parsers (Geneve, GRE, NSH, OTV, VXLAN and VXLAN GPE) could cause a b

CVE-2017-5341 CRITICAL
9.8 Jan 28

The OTV parser in tcpdump before 4.9.0 has a buffer overflow in print-otv.c:otv_print(). Rated critical severity (CVSS 9

CVE-2017-13000 CRITICAL
9.8 Sep 14

The IEEE 802.15.4 parser in tcpdump before 4.9.2 has a buffer over-read in print-802_15_4.c:ieee802_15_4_if_print(). Rat

CVE-2017-13050 CRITICAL
9.8 Sep 14

The RPKI-Router parser in tcpdump before 4.9.2 has a buffer over-read in print-rpki-rtr.c:rpki_rtr_pdu_print(). Rated cr

CVE-2017-13019 CRITICAL
9.8 Sep 14

The PGM parser in tcpdump before 4.9.2 has a buffer over-read in print-pgm.c:pgm_print(). Rated critical severity (CVSS

CVE-2014-8767 MEDIUM POC
5.0 Nov 20

Integer underflow in the olsr_print function in tcpdump 3.9.6 through 4.6.2, when in verbose mode, allows remote attacke

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