Buffer overflow in Libslirp Project
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 class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.6 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.036 (88.9th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 89th percentile — 88.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.036 · newest: 0.036 · change: 0.000
Affected products
- Libslirp Project — versions 4.1.0
- Qemu — versions 4.2.0
- Debian Linux — versions 8.0, 9.0
- openSUSE Leap — versions 15.1
Weakness classification (CWE)
References
- gitlab.freedesktop.org/slirp/libslirp/commit/ce131029d6d4a405cb7d3ac6716d03e58f… (Patch, Third Party Advisory)
- gitlab.freedesktop.org/slirp/libslirp/commit/82ebe9c370a0e2970fb5695aa19aa5214a… (Patch, Third Party Advisory)
- gitlab.freedesktop.org/slirp/libslirp/commit/2655fffed7a9e765bcb4701dd876e9dab9… (Patch, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/01/16/2 (Patch, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/01/msg00022.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/01/msg00036.html (mailing-list, Mailing List, Third Party Advisory)
- seclists.org/bugtraq/2020/Feb/0 (mailing-list, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4616 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0348 (vendor-advisory, Third Party Advisory)
- usn.ubuntu.com/4283-1/ (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-7039?
- CVE-2020-7039 is a medium-severity vulnerability in Libslirp Project, classified under Out-of-bounds Write. CVSS score: 5.6/10. Published 2020-01-16.
- How severe is CVE-2020-7039?
- Medium severity. CVSS v3 base score is 5.6 out of 10.