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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2021.3818 tcpdump security and bug fix update 10 November 2021 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: tcpdump Publisher: Red Hat Operating System: Red Hat Impact/Access: Denial of Service -- Remote/Unauthenticated Resolution: Patch/Upgrade CVE Names: CVE-2020-8037 Reference: ESB-2020.4094 ESB-2020.3961 Original Bulletin: https://access.redhat.com/errata/RHSA-2021:4236 - --------------------------BEGIN INCLUDED TEXT-------------------- - -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 ===================================================================== Red Hat Security Advisory Synopsis: Low: tcpdump security and bug fix update Advisory ID: RHSA-2021:4236-01 Product: Red Hat Enterprise Linux Advisory URL: https://access.redhat.com/errata/RHSA-2021:4236 Issue date: 2021-11-09 CVE Names: CVE-2020-8037 ===================================================================== 1. Summary: An update for tcpdump is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Low. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section. 2. Relevant releases/architectures: Red Hat Enterprise Linux AppStream (v. 8) - aarch64, ppc64le, s390x, x86_64 3. Description: The tcpdump packages contain the tcpdump utility for monitoring network traffic. The tcpdump utility can capture and display the packet headers on a particular network interface or on all interfaces. Security Fix(es): * tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory (CVE-2020-8037) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. Additional Changes: For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section. 4. Solution: For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 5. Bugs fixed (https://bugzilla.redhat.com/): 1860216 - tcpdump can not parse mptcp options 1895080 - CVE-2020-8037 tcpdump: ppp decapsulator can be convinced to allocate a large amount of memory 6. Package List: Red Hat Enterprise Linux AppStream (v. 8): Source: tcpdump-4.9.3-2.el8.src.rpm aarch64: tcpdump-4.9.3-2.el8.aarch64.rpm tcpdump-debuginfo-4.9.3-2.el8.aarch64.rpm tcpdump-debugsource-4.9.3-2.el8.aarch64.rpm ppc64le: tcpdump-4.9.3-2.el8.ppc64le.rpm tcpdump-debuginfo-4.9.3-2.el8.ppc64le.rpm tcpdump-debugsource-4.9.3-2.el8.ppc64le.rpm s390x: tcpdump-4.9.3-2.el8.s390x.rpm tcpdump-debuginfo-4.9.3-2.el8.s390x.rpm tcpdump-debugsource-4.9.3-2.el8.s390x.rpm x86_64: tcpdump-4.9.3-2.el8.x86_64.rpm tcpdump-debuginfo-4.9.3-2.el8.x86_64.rpm tcpdump-debugsource-4.9.3-2.el8.x86_64.rpm These packages are GPG signed by Red Hat for security. Our key and details on how to verify the signature are available from https://access.redhat.com/security/team/key/ 7. References: https://access.redhat.com/security/cve/CVE-2020-8037 https://access.redhat.com/security/updates/classification/#low https://access.redhat.com/documentation/en-us/red_hat_enterprise_linux/8/html/8.5_release_notes/ 8. Contact: The Red Hat security contact is <secalert@redhat.com>. More contact details at https://access.redhat.com/security/team/contact/ Copyright 2021 Red Hat, Inc. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIVAwUBYYrdidzjgjWX9erEAQhDCg/9Ek69RNw0Y2StR6KPJIm8xUPW8WYFNHag j9yEG5rPacLLPrrjDQkMhGOSywVdU3DRxyZWHGn18HjbsOfS7Wrj08BVtwdLWm9Y +3D57e/4+ZCXFl+4JBcueSfDmNqQbZRqYO+OOlQfvUZ82iU7JNwbacfDrtbhydj2 VcRKoQ5DCXkcyJp3AG0bf8+7goPpQGMRjTJP/cH1lExOiOzPKPXUTFmVeNyr1VTw QxwQgtYqGbheNTsCrdlwqRvmkvjMEfamsHkUQppoB9MJWv9ALBGJ7MbBgfP0VUhE NxO4bT2c1+FM2YF30pDtCsO3Jw72Z+jNGkPGh6njzdCBTN+wDHO08snQzQYMq26T WZnEq61QQy+TukdCM4MIYkKdozLusTWmlH/z8/oPPvvKOWM9239swV7ijegZcsU5 SFMDnyZe+A5iaddixc5v+2e9NRE5d44miXi34AbTuuIbt3ICBqfOzR/77EyyAXUV 9BinfBBCf1wsgKzUkvxnASnxtcjtk5gmo1V+s0Swhz2X3oEC+e3T7IT0HKiE3jfe bMH5GFyW58eV54U5pP+s0CzQnX7zv4ZQga78VhNR/FU0uvmOwKRHXe6Ra++o1m6h ympHQrgfQlrVKe+0mGtRiZVP7UkzQlt0n0JmZb2r3DVHqSY5mf4+1GzLRxYKqhPT wzpVwG+8r9E= =lQRI - -----END PGP SIGNATURE----- - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. 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It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: https://www.auscert.org.au/bulletins/ =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: auscert@auscert.org.au Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). 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