Vulnerability 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 Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Libslirp Project | Libslirp | 4.1.0 |
| Qemu | Qemu | 4.2.0 |
| Debian | Debian Linux | 8.0 |
| Opensuse | Leap | 15.1 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2020/01/16/2Mailing ListPatchThird Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0348Third Party Advisory
- https://access.redhat.com/errata/RHSA-2020:0775Third Party Advisory
- https://gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd87PatchThird Party Advisory
- https://gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19PatchThird Party Advisory
- https://gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716PatchThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00022.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/01/msg00036.htmlMailing ListThird Party Advisory
- https://lists.debian.org/debian-lts-announce/2021/02/msg00012.htmlMailing ListThird Party Advisory
- https://seclists.org/bugtraq/2020/Feb/0Mailing ListThird Party Advisory
- https://security.gentoo.org/glsa/202005-02Third Party Advisory
- https://usn.ubuntu.com/4283-1/Third Party Advisory
- https://www.debian.org/security/2020/dsa-4616Third Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.htmlThird Party Advisory
FAQ
What is CVE-2020-7039?
CVE-2020-7039 is a vulnerability with a CVSS score of 5.6 (MEDIUM). 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 ac...
How severe is CVE-2020-7039?
CVE-2020-7039 has been rated MEDIUM with a CVSS base score of 5.6/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-7039?
Check the references section above for vendor advisories and patch information. Affected products include: Libslirp Project Libslirp, Qemu Qemu, Debian Debian Linux, Opensuse Leap.