CVE-2020-17380

Description

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.

CVSS Metrics

• v3.1•MEDIUM•Score: 6.3CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:L
• v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.16%• Percentile: 37%

Techniques & Countermeasures

• CWE-787•Out-of-bounds Write

  The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

• debian•debian_linux

  9.0

• qemu•qemu

  ≤ 5.0.0

References (5)

• https://bugzilla.redhat.com/show_bug.cgi?id=1862167
• https://lists.nongnu.org/archive/html/qemu-devel/2020-09/msg01175.html
• http://www.openwall.com/lists/oss-security/2021/03/09/1
• https://security.netapp.com/advisory/ntap-20210312-0003/
• https://lists.debian.org/debian-lts-announce/2021/04/msg00009.html