Protect yourself against future threats.
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AUSCERT External Security Bulletin Redistribution
ESB-2020.3961
tcpdump security update
11 November 2020
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AusCERT Security Bulletin Summary
---------------------------------
Product: tcpdump
Publisher: Debian
Operating System: Debian GNU/Linux 9
Linux variants
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2020-8037
Original Bulletin:
https://www.debian.org/lts/security/2020/dla-2444
Comment: This advisory references vulnerabilities in products which run on
platforms other than Debian. It is recommended that administrators
running tcpdump check for an updated version of the software for
their operating system.
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Debian LTS Advisory DLA-2444-1 debian-lts@lists.debian.org
https://www.debian.org/lts/security/ Utkarsh Gupta
November 10, 2020 https://wiki.debian.org/LTS
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Package : tcpdump
Version : 4.9.3-1~deb9u2
CVE ID : CVE-2020-8037
Debian Bug : 973877
The ppp de-capsulator in tcpdump 4.9.3 can be convinced to allocate
a large amount of memory.
The buffer should be big enough to hold the captured data, but it
doesn't need to be big enough to hold the entire on-the-network
packet, if we haven't captured all of it.
For Debian 9 stretch, this problem has been fixed in version
4.9.3-1~deb9u2.
We recommend that you upgrade your tcpdump packages.
For the detailed security status of tcpdump please refer to
its security tracker page at:
https://security-tracker.debian.org/tracker/tcpdump
Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://wiki.debian.org/LTS
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