ID CVE-2018-19519
Summary 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.
References
Vulnerable Configurations
  • cpe:2.3:a:tcpdump:tcpdump:4.9.2:*:*:*:*:*:*:*
    cpe:2.3:a:tcpdump:tcpdump:4.9.2:*:*:*:*:*:*:*
CVSS
Base: 4.3 (as of 24-08-2020 - 17:37)
Impact:
Exploitability:
CWE CWE-125
CAPEC
  • Infiltration of Hardware Development Environment
    An attacker, leveraging the ability to manipulate components of primary support systems and tools within the development and production environments, inserts malicious software within the hardware and/or firmware development environment. The infiltration purpose is to alter developed hardware components in a system destined for deployment at the victim's organization, for the purpose of disruption or further compromise.
  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
Access
VectorComplexityAuthentication
NETWORK MEDIUM NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE NONE
cvss-vector via4 AV:N/AC:M/Au:N/C:P/I:N/A:N
redhat via4
advisories
  • bugzilla
    id 1655374
    title CVE-2018-19519 tcpdump: Stack-based buffer over-read in print-hncp.c:print_prefix() via crafted pcap
    oval
    OR
    • comment Red Hat Enterprise Linux must be installed
      oval oval:com.redhat.rhba:tst:20070304026
    • AND
      • comment Red Hat Enterprise Linux 7 is installed
        oval oval:com.redhat.rhba:tst:20150364027
      • comment tcpdump is earlier than 14:4.9.2-4.el7_7.1
        oval oval:com.redhat.rhsa:tst:20193976001
      • comment tcpdump is signed with Red Hat redhatrelease2 key
        oval oval:com.redhat.rhea:tst:20180705002
    rhsa
    id RHSA-2019:3976
    released 2019-11-26
    severity Low
    title RHSA-2019:3976: tcpdump security update (Low)
  • bugzilla
    id 1715423
    title tcpdump %pre creates user and groups unconditionally, raising alerts in corporate environment
    oval
    OR
    • comment Red Hat Enterprise Linux must be installed
      oval oval:com.redhat.rhba:tst:20070304026
    • AND
      • comment Red Hat Enterprise Linux 8 is installed
        oval oval:com.redhat.rhba:tst:20193384074
      • OR
        • AND
          • comment tcpdump is earlier than 14:4.9.2-6.el8
            oval oval:com.redhat.rhsa:tst:20201604001
          • comment tcpdump is signed with Red Hat redhatrelease2 key
            oval oval:com.redhat.rhea:tst:20180705002
        • AND
          • comment tcpdump-debugsource is earlier than 14:4.9.2-6.el8
            oval oval:com.redhat.rhsa:tst:20201604003
          • comment tcpdump-debugsource is signed with Red Hat redhatrelease2 key
            oval oval:com.redhat.rhsa:tst:20201604004
    rhsa
    id RHSA-2020:1604
    released 2020-04-28
    severity Low
    title RHSA-2020:1604: tcpdump security update (Low)
rpms
  • tcpdump-14:4.9.2-4.el7_7.1
  • tcpdump-debuginfo-14:4.9.2-4.el7_7.1
  • tcpdump-14:4.9.2-6.el8
  • tcpdump-debuginfo-14:4.9.2-6.el8
  • tcpdump-debugsource-14:4.9.2-6.el8
refmap via4
bid 106098
confirm https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44516
fedora
  • FEDORA-2019-6db0d5b9d9
  • FEDORA-2019-85d92df70f
  • FEDORA-2019-d06bc63433
misc https://github.com/zyingp/temp/blob/master/tcpdump.md
ubuntu
  • USN-4252-1
  • USN-4252-2
Last major update 24-08-2020 - 17:37
Published 25-11-2018 - 20:29
Last modified 24-08-2020 - 17:37
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