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.

References

http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html

http://www.openwall.com/lists/oss-security/2020/01/16/2

https://access.redhat.com/errata/RHSA-2020:0348

https://access.redhat.com/errata/RHSA-2020:0775

https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab975f289

https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a6a1c80

https://gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9

https://lists.debian.org/debian-lts-announce/2020/01/msg00022.html

https://lists.debian.org/debian-lts-announce/2020/01/msg00036.html

https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html

https://seclists.org/bugtraq/2020/Feb/0

https://security.gentoo.org/glsa/202005-02

https://usn.ubuntu.com/4283-1/

https://www.debian.org/security/2020/dsa-4616

Details

Risk Information

CVSS v2

CVSS v3