CVE-2020-7039
QEMU: slirp: OOB buffer access while emulating tcp protocols in tcp_emu()
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
0Exploited in Wild
-Decision
Descriptions
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.
El archivo tcp_emu en tcp_subr.c en libslirp versión 4.1.0, como es usado en QEMU versión 4.2.0, administra inapropiadamente la memoria, como es demostrado por los comandos IRC DCC en EMU_IRC. Esto puede causar un desbordamiento del búfer en la región heap de la memoria u otro acceso fuera de límites que puede conllevar a una DoS o un código arbitrario de ejecución potencial.
A heap buffer overflow issue was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the tcp_emu() routine while emulating IRC and other protocols. An attacker could use this flaw to crash the QEMU process on the host, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2020-01-14 CVE Reserved
- 2020-01-16 CVE Published
- 2023-11-20 EPSS Updated
- 2024-08-04 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-122: Heap-based Buffer Overflow
- CWE-787: Out-of-bounds Write
CAPEC
References (16)
| URL | Tag | Source |
|---|---|---|
| https://lists.debian.org/debian-lts-announce/2020/01/msg00022.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2020/01/msg00036.html | Mailing List |
|
| https://lists.debian.org/debian-lts-announce/2021/02/msg00012.html | Mailing List |
|
| https://seclists.org/bugtraq/2020/Feb/0 | Mailing List |
|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html | 2021-02-14 | |
| https://access.redhat.com/errata/RHSA-2020:0348 | 2021-02-14 | |
| https://access.redhat.com/errata/RHSA-2020:0775 | 2021-02-14 | |
| https://security.gentoo.org/glsa/202005-02 | 2021-02-14 | |
| https://usn.ubuntu.com/4283-1 | 2021-02-14 | |
| https://www.debian.org/security/2020/dsa-4616 | 2021-02-14 | |
| https://access.redhat.com/security/cve/CVE-2020-7039 | 2020-06-24 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1791551 | 2020-06-24 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Libslirp Project Search vendor "Libslirp Project" | Libslirp Search vendor "Libslirp Project" for product "Libslirp" | 4.1.0 Search vendor "Libslirp Project" for product "Libslirp" and version "4.1.0" | - |
Affected
| ||||||
| Qemu Search vendor "Qemu" | Qemu Search vendor "Qemu" for product "Qemu" | 4.2.0 Search vendor "Qemu" for product "Qemu" and version "4.2.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 8.0 Search vendor "Debian" for product "Debian Linux" and version "8.0" | - |
Affected
| ||||||
| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
| ||||||
| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 15.1 Search vendor "Opensuse" for product "Leap" and version "15.1" | - |
Affected
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