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.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-1711
Reference (s):
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1711
- GENTOO:GLSA-202005-02
- URL: https://security.gentoo.org/glsa/202005-02
- https://lists.gnu.org/archive/html/qemu-devel/2020-01/msg05535.html
- https://www.openwall.com/lists/oss-security/2020/01/23/3