CVE-2018-19519: tcpdump Out-of-bounds Read
CVSS: 5.5v3.0MediumModified
AliasesMGASA-2018-0492SUSE-SU-2018:4131-1SUSE-SU-2018:4149-1RHSA-2019:3976RHSA-2020:1604UBUNTU-CVE-2018-19519DEBIAN-CVE-2018-19519
Published 25-11-2018Last modified 05-08-2024
Vulnerability summary
CVE-2018-19519 is a medium (CVSS 5.5) Out-of-bounds Read vulnerability in tcpdump. EPSS estimates a 2.59% chance of exploitation in the next 30 days, higher than 85% of scored vulnerabilities. 1 public exploit is recorded.
CVSS score
5.5/10
010
Medium · v3.0 (NVD)EPSS score
2.59%
0%100%
Low · +0.22 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits1github
Advisory lineage
Upstream 0 · Downstream 3 · Related 3Timeline
- 25-11-2018PublishedVulnerability first disclosed.
- 05-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
5 scores · 4 sources · 2 versionsMedium 5.5Preferred score · NVD (NIST)
CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:NSources4 sources · 4.3–5.5
- OSV · Red hatEcosystem advisory · calculated4.3MediumCVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:NDiffers
- OSV · UbuntuEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
- OSV · DebianEcosystem advisory · calculated5.5MediumCVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:P/I:N/A:NSourcesSingle source
EPSS trend
Probability
2.59%
Chance of exploitation in the next 30 days
Percentile
85%
Versus all other CVEs
30-day change
+0.22 pp
From 2.36% on 18-09-2026
18-09-202618-10-2026
EPSS score2.59%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
1 foundTemp
Maturity: poc
Weaknesses
CWE · root causeAffected systems
Suse7 products
- tcpdump&distro=SUSE Linux Enterprise Desktop 12 SP3< 4.9.2-14.8.1
- tcpdump&distro=SUSE Linux Enterprise Desktop 12 SP4< 4.9.2-14.8.1
- tcpdump&distro=SUSE Linux Enterprise Module for Basesystem 15< 4.9.2-3.3.1
- tcpdump&distro=SUSE Linux Enterprise Server 12 SP3< 4.9.2-14.8.1
- tcpdump&distro=SUSE Linux Enterprise Server 12 SP4< 4.9.2-14.8.1
Redhat3 products
- tcpdump< 14:4.9.2-4.el7_7.1 | < 14:4.9.2-6.el8
- tcpdump-debuginfo< 14:4.9.2-4.el7_7.1 | < 14:4.9.2-6.el8
- tcpdump-debugsource< 14:4.9.2-6.el8
Debian1 product
- tcpdumpAll versions (No fix recorded)
Mageia1 product
- tcpdump< 4.9.2-1.1.mga6
Tcpdump1 product
- tcpdump4.9.2
Ubuntu1 product
- tcpdump< 4.9.3-0ubuntu0.14.04.1+esm1 | < 4.9.3-0ubuntu0.16.04.1 | < 4.9.3-0ubuntu0.18.04.1
6 vendors · 14 products
References
30 links- github.com/zyingp/temp/blob/master/tcpdump.mdX Refsource MISCExploitMitigationThird Party AdvisoryREPORT
- kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44516X Refsource CONFIRM
