CVE-2020-7039 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Reference

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://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

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

LOW

Base Severity

5.6