Vulnerability Details : CVE-2020-7039
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.
Vulnerability category: OverflowMemory CorruptionExecute codeDenial of service
Products affected by CVE-2020-7039
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- cpe:2.3:a:qemu:qemu:4.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:a:libslirp_project:libslirp:4.1.0:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-7039
1.02%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-7039
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
6.8
|
MEDIUM | AV:N/AC:M/Au:N/C:P/I:P/A:P |
8.6
|
6.4
|
NIST | |
|
5.6
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L |
2.2
|
3.4
|
NIST |
CWE ids for CVE-2020-7039
-
The product writes data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-7039
-
https://lists.debian.org/debian-lts-announce/2020/01/msg00036.html
[SECURITY] [DLA 2090-1] qemu security updateMailing List;Third Party Advisory
-
https://access.redhat.com/errata/RHSA-2020:0348
RHSA-2020:0348 - Security Advisory - Red Hat Customer PortalThird Party Advisory
-
https://lists.debian.org/debian-lts-announce/2020/01/msg00022.html
[SECURITY] [DLA 2076-1] slirp security updateMailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
[security-announce] openSUSE-SU-2020:0468-1: important: Security updateThird Party Advisory
-
https://security.gentoo.org/glsa/202005-02
QEMU: Multiple vulnerabilities (GLSA 202005-02) — Gentoo securityThird Party Advisory
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https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a6a1c80
slirp: use correct size while emulating commands (82ebe9c3) · Commits · slirp / libslirp · GitLabPatch;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html
[SECURITY] [DLA 2551-1] slirp security updateMailing List;Third Party Advisory
-
https://usn.ubuntu.com/4283-1/
USN-4283-1: QEMU vulnerabilities | Ubuntu security noticesThird Party Advisory
-
https://seclists.org/bugtraq/2020/Feb/0
Bugtraq: [SECURITY] [DSA 4616-1] qemu security updateMailing List;Third Party Advisory
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http://www.openwall.com/lists/oss-security/2020/01/16/2
oss-security - CVE-2020-7039 QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()Mailing List;Patch;Third Party Advisory
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https://gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9
slirp: use correct size while emulating IRC commands (ce131029) · Commits · slirp / libslirp · GitLabPatch;Third Party Advisory
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https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab975f289
tcp_emu: Fix oob access (2655fffe) · Commits · slirp / libslirp · GitLabPatch;Third Party Advisory
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https://www.debian.org/security/2020/dsa-4616
Debian -- Security Information -- DSA-4616-1 qemuThird Party Advisory
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https://access.redhat.com/errata/RHSA-2020:0775
RHSA-2020:0775 - Security Advisory - Red Hat Customer PortalThird Party Advisory
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