CVE-2020-7039

MEDIUM

libslirp 4.1.0 - Heap-Based Buffer Overflow in tcp_emu via IRC DCC Commands

Title source: llm
STIX 2.1

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 (14)

Core 14
Core References
Mailing List, Patch, Third Party Advisory x_refsource_confirm
http://www.openwall.com/lists/oss-security/2020/01/16/2
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/01/msg00022.html
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2020/01/msg00036.html
Mailing List, Third Party Advisory mailing-list x_refsource_bugtraq
https://seclists.org/bugtraq/2020/Feb/0
Third Party Advisory vendor-advisory x_refsource_debian
https://www.debian.org/security/2020/dsa-4616
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0348
Third Party Advisory vendor-advisory x_refsource_ubuntu
https://usn.ubuntu.com/4283-1/
Third Party Advisory vendor-advisory x_refsource_redhat
https://access.redhat.com/errata/RHSA-2020:0775
Third Party Advisory vendor-advisory x_refsource_suse
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
Third Party Advisory vendor-advisory x_refsource_gentoo
https://security.gentoo.org/glsa/202005-02
Mailing List, Third Party Advisory mailing-list x_refsource_mlist
https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html

Scores

CVSS v3 5.6
EPSS 0.0083
EPSS Percentile 74.8%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Details

CWE
CWE-787
Status published
Products (5)
debian/debian_linux 8.0
debian/debian_linux 9.0
libslirp_project/libslirp 4.1.0
opensuse/leap 15.1
qemu/qemu 4.2.0
Published Jan 16, 2020
Tracked Since Feb 18, 2026