Medium severity · published Jan 16, 2020
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
5.6
CVSS
3.6%
EPSS
No
On KEV
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
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)3.6% · higher than 89% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DL
Debian Linux · Debian
8.0; 9.0 · source: NVD
LE
Leap · Opensuse
15.1 · source: NVD
LI
Libslirp · Libslirp Project
4.1.0 · source: NVD
QE
Qemu · Qemu
4.2.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2020-7039
CVE.org
https://www.cve.org/CVERecord?id=CVE-2020-7039
Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html
Mailing List
http://www.openwall.com/lists/oss-security/2020/01/16/2
Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0348
Third Party Advisory
https://access.redhat.com/errata/RHSA-2020:0775
Patch
https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab975f289
Patch
https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a6a1c80
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