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Red Hat OpenShift: CVE-2020-7039: QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()

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Red Hat OpenShift: CVE-2020-7039: QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()

Severity
7
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:P)
Published
01/16/2020
Created
12/30/2020
Added
12/29/2020
Modified
03/17/2021

Description

tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a heap-based buffer overflow or other out-of-bounds access which can lead to a DoS or potential execute arbitrary code.

Solution(s)

  • linuxrpm-upgrade-slirp4netns

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