Buffer overflow in Qemu
CVE-2020-17380
A heap-based buffer overflow was found in QEMU through 5.0.0 in the SDHCI device emulation support. It could occur while doing a multi block SDMA transfer via the sdhci_sdma_transfer_multi_blocks() routine in hw/sd/sdhci.c. A guest user or process could use this flaw to crash the QEMU process on the host, resulting in a denial of service condition, or potentially execute 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 6.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.004 (34.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 34th percentile — 34.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Qemu
- Debian Linux — versions 9.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Patch, Third Party Advisory, Issue Tracking)
- lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.html (Patch, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2021/03/09/1 (mailing-list, Patch, Mailing List, Third Party Advisory)
- security.netapp.com/advisory/ntap-20210312-0003/ (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/04/msg00009.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-17380?
- CVE-2020-17380 is a medium-severity vulnerability in Qemu, classified under Out-of-bounds Write. CVSS score: 6.3/10. Published 2021-01-30.
- How severe is CVE-2020-17380?
- Medium severity. CVSS v3 base score is 6.3 out of 10.
- Is CVE-2020-17380 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.