Out-of-bounds Read in Libslirp Project
CVE-2020-10756
An out-of-bounds read vulnerability was found in the SLiRP networking implementation of the QEMU emulator. This flaw occurs in the icmp6_send_echoreply() routine while replying to an ICMP echo request, also known as ping. This flaw allows a malicious guest to leak the contents of the host memory, resulting in possible information disclosure. This flaw affects versions of libslirp before 4.3.1.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.005 (41.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 41st percentile — 41.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: +0.000
Affected products
- Libslirp Project
- Canonical Ubuntu Linux — versions 16.04, 18.04, 20.04
- Debian Linux — versions 9.0, 10.0
- openSUSE Leap — versions 15.0, 15.1
- Red Hat Enterprise Linux — versions 7.0, 8.0
- Red Hat OpenStack — versions 13
- Slirp — versions All libslirp versions before 4.3.1
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00035.html (vendor-advisory, Mailing List, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-07/msg00040.html (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4728 (vendor-advisory, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/07/msg00020.html (mailing-list, Mailing List, Third Party Advisory)
- usn.ubuntu.com/4437-1/ (vendor-advisory, Third Party Advisory)
- www.zerodayinitiative.com/advisories/ZDI-20-1005/ (VDB Entry, Third Party Advisory)
- usn.ubuntu.com/4467-1/ (vendor-advisory, Third Party Advisory)
- security.netapp.com/advisory/ntap-20201001-0001/ (Third Party Advisory)
Frequently asked questions
- What is CVE-2020-10756?
- CVE-2020-10756 is a medium-severity vulnerability in Libslirp Project, classified under Out-of-bounds Read. CVSS score: 6.5/10. Published 2020-07-09.
- How severe is CVE-2020-10756?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2020-10756 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.