CVE-2018-19519
CVE-2018-19519 is a medium-severity vulnerability in Tcpdump with a CVSS 3.x base score of 5.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-125.
Key facts
- Severity: Medium (CVSS 3.x base score 5.5)
- CVSS v2: 4.3
- EPSS exploit prediction: 2% (82nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-125
- Affected product: Tcpdump
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2018-19519?
- 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.
- How severe is CVE-2018-19519?
- CVE-2018-19519 has a CVSS 3.x base score of 5.5, rated medium severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2018-19519 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (82nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2018-19519?
- CVE-2018-19519 affects Tcpdump. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2018-19519?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2018-19519 published?
- CVE-2018-19519 was published on 2018-11-25 and last updated on 2026-06-17.
References
- http://www.securityfocus.com/bid/106098
- https://access.redhat.com/errata/RHSA-2019:3976
- https://github.com/zyingp/temp/blob/master/tcpdump.md
- https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44516
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/62XY42U6HY3H2APR5EHNWCZ7SAQNMMJN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FNYXF3IY2X65IOD422SA6EQUULSGW7FN/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/R2UDPOSGVJQIYC33SQBXMDXHH4QDSDMU/
- https://usn.ubuntu.com/4252-1/
- https://usn.ubuntu.com/4252-2/
Affected products (1)
- cpe:2.3:a:tcpdump:tcpdump:4.9.2:*:*:*:*:*:*:*
More vulnerabilities in Tcpdump
- CVE-2018-10105 — Critical (CVSS 9.8): tcpdump before 4.9.3 mishandles the printing of SMB data (issue 2 of 2).
- CVE-2018-10103 — Critical (CVSS 9.8): tcpdump before 4.9.3 mishandles the printing of SMB data (issue 1 of 2).
- CVE-2017-13725 — Critical (CVSS 9.8): The IPv6 routing header parser in tcpdump before 4.9.2 has a buffer over-read in print-rt6.c:rt6_print().
- CVE-2017-13690 — Critical (CVSS 9.8): The IKEv2 parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c, several functions.
- CVE-2017-13689 — Critical (CVSS 9.8): The IKEv1 parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c:ikev1_id_print().
- CVE-2017-13688 — Critical (CVSS 9.8): The OLSR parser in tcpdump before 4.9.2 has a buffer over-read in print-olsr.c:olsr_print().
Other CWE-125 (Out-of-bounds Read) vulnerabilities
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- CVE-2021-41556 — Critical (CVSS 10.0): sqclass.cpp in Squirrel through 2.2.5 and 3.x through 3.1 allows an out-of-bounds read (in the core interpreter) that…
- CVE-2021-21777 — Critical (CVSS 10.0): An information disclosure vulnerability exists in the Ethernet/IP UDP handler functionality of EIP Stack Group OpENer…
- CVE-2017-14451 — Critical (CVSS 10.0): An exploitable out-of-bounds read vulnerability exists in libevm (Ethereum Virtual Machine) of CPP-Ethereum. A…
- CVE-2013-0767 — Critical (CVSS 10.0): The nsSVGPathElement::GetPathLengthScale function in Mozilla Firefox before 18.0, Firefox ESR 10.x before 10.0.12 and…