Buffer overflow in Qemu
CVE-2020-1711
An out-of-bounds heap buffer access flaw was found in the way the iSCSI Block driver in QEMU versions 2.12.0 before 4.2.1 handled a response coming from an iSCSI server while checking the status of a Logical Address Block (LBA) in an iscsi_co_block_status() routine. A remote user could use this flaw to crash the QEMU process, resulting in a denial of service or potential execution of arbitrary code with privileges of the QEMU process on the host.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.7 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H.
EPSS exploit prediction
EPSS: 0.040 (90.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 90.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.040 · newest: 0.040 · change: 0.000
Affected products
- Qemu
- Debian Linux — versions 8.0, 9.0
- openSUSE Leap — versions 15.1
- Red Hat Qemu — versions All qemu versions 2.12.0 before 4.2.1
- Red Hat Enterprise Linux — versions 7.0, 8.0
- Red Hat OpenStack — versions 10, 13
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.html (Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2020/01/23/3 (Mailing List, Third Party Advisory)
- usn.ubuntu.com/4283-1/ (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0669 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0773 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0730 (vendor-advisory, Third Party Advisory)
- access.redhat.com/errata/RHSA-2020:0731 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/03/msg00017.html (mailing-list, Third Party Advisory)
- lists.opensuse.org/opensuse-security-announce/2020-04/msg00007.html (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-1711?
- CVE-2020-1711 is a high-severity vulnerability in Qemu, classified under Heap-based Buffer Overflow. CVSS score: 7.7/10. Published 2020-02-11.
- How severe is CVE-2020-1711?
- High severity. CVSS v3 base score is 7.7 out of 10.
- Is CVE-2020-1711 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.