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.

CVSS v3.0 5.6 MEDIUM
CVSS v2.0 6.8 MEDIUM

5.6^/10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 3.4

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact LOW

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
http://www.openwall.com/lists/oss-security/2020/01/16/2	Mailing List Patch Third Party Advisory
https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a6a1c80	Patch Third Party Advisory
https://gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9	Patch Third Party Advisory
https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab975f289	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00022.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/01/msg00036.html	Mailing List Third Party Advisory
https://seclists.org/bugtraq/2020/Feb/0	Mailing List Third Party Advisory
https://www.debian.org/security/2020/dsa-4616	Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0348	Third Party Advisory
https://usn.ubuntu.com/4283-1/	Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0775	Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html	Third Party Advisory
https://security.gentoo.org/glsa/202005-02	Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:libslirp_project:libslirp:4.1.0:*:*:*:*:*:*:*

Configuration 2 (hide)

OR	cpe:2.3:a:qemu:qemu:4.2.0:::::::*
	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:opensuse:leap:15.1:::::::*

Information

Published : 2020-01-16 15:15

Updated : 2021-02-13 19:50

NVD link : CVE-2020-7039

Mitre link : CVE-2020-7039

JSON object : View

CWE

CWE-787

Out-of-bounds Write

Products Affected

debian

debian_linux

opensuse

leap

qemu

qemu

libslirp_project

libslirp

{"cve": {"data_type": "CVE", "references": {"reference_data": [{"url": "http://www.openwall.com/lists/oss-security/2020/01/16/2", "name": "http://www.openwall.com/lists/oss-security/2020/01/16/2", "tags": ["Mailing List", "Patch", "Third Party Advisory"], "refsource": "CONFIRM"}, {"url": "https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a6a1c80", "name": "https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a6a1c80", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9", "name": "https://gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716d03e58fb4a5d9", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab975f289", "name": "https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab975f289", "tags": ["Patch", "Third Party Advisory"], "refsource": "MISC"}, {"url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00022.html", "name": "[debian-lts-announce] 20200126 [SECURITY] [DLA 2076-1] slirp security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://lists.debian.org/debian-lts-announce/2020/01/msg00036.html", "name": "[debian-lts-announce] 20200131 [SECURITY] [DLA 2090-1] qemu security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}, {"url": "https://seclists.org/bugtraq/2020/Feb/0", "name": "20200203 [SECURITY] [DSA 4616-1] qemu security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "BUGTRAQ"}, {"url": "https://www.debian.org/security/2020/dsa-4616", "name": "DSA-4616", "tags": ["Third Party Advisory"], "refsource": "DEBIAN"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0348", "name": "RHSA-2020:0348", "tags": ["Third Party Advisory"], "refsource": "REDHAT"}, {"url": "https://usn.ubuntu.com/4283-1/", "name": "USN-4283-1", "tags": ["Third Party Advisory"], "refsource": "UBUNTU"}, {"url": "https://access.redhat.com/errata/RHSA-2020:0775", "name": "RHSA-2020:0775", "tags": ["Third Party Advisory"], "refsource": "REDHAT"}, {"url": "http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html", "name": "openSUSE-SU-2020:0468", "tags": ["Third Party Advisory"], "refsource": "SUSE"}, {"url": "https://security.gentoo.org/glsa/202005-02", "name": "GLSA-202005-02", "tags": ["Third Party Advisory"], "refsource": "GENTOO"}, {"url": "https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html", "name": "[debian-lts-announce] 20210209 [SECURITY] [DLA 2551-1] slirp security update", "tags": ["Mailing List", "Third Party Advisory"], "refsource": "MLIST"}]}, "data_format": "MITRE", "description": {"description_data": [{"lang": "en", "value": "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."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "en", "value": "CWE-787"}]}]}, "data_version": "4.0", "CVE_data_meta": {"ID": "CVE-2020-7039", "ASSIGNER": "cve@mitre.org"}}, "impact": {"baseMetricV2": {"cvssV2": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "severity": "MEDIUM", "acInsufInfo": false, "impactScore": 6.4, "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}, "baseMetricV3": {"cvssV3": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.6, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L", "integrityImpact": "LOW", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "LOW", "privilegesRequired": "NONE", "confidentialityImpact": "LOW"}, "impactScore": 3.4, "exploitabilityScore": 2.2}}, "publishedDate": "2020-01-16T23:15Z", "configurations": {"nodes": [{"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:libslirp_project:libslirp:4.1.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}, {"children": [], "operator": "OR", "cpe_match": [{"cpe23Uri": "cpe:2.3:a:qemu:qemu:4.2.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}, {"cpe23Uri": "cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*", "cpe_name": [], "vulnerable": true}]}], "CVE_data_version": "4.0"}, "lastModifiedDate": "2021-02-14T03:50Z"}

5.6 /10