Test ID:	1.3.6.1.4.1.25623.1.0.892753
Category:	Debian Local Security Checks
Title:	Debian: Security Advisory (DLA-2753-1)
Summary:	The remote host is missing an update for the Debian 'qemu' package(s) announced via the DLA-2753-1 advisory.
Description:	Summary: The remote host is missing an update for the Debian 'qemu' package(s) announced via the DLA-2753-1 advisory. Vulnerability Insight: Several security vulnerabilities have been found in Qemu, a fast processor emulator. CVE-2021-3713 An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host. CVE-2021-3682 A flaw was found in the USB redirector device emulation of QEMU. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host. CVE-2021-3527 A flaw was found in the USB redirector device (usb-redir) of QEMU. Small USB packets are combined into a single, large transfer request, to reduce the overhead and improve performance. The combined size of the bulk transfer is used to dynamically allocate a variable length array (VLA) on the stack without proper validation. Since the total size is not bounded, a malicious guest could use this flaw to influence the array length and cause the QEMU process to perform an excessive allocation on the stack, resulting in a denial of service. CVE-2021-3594 An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp_input() function and could occur while processing a udp packet that is smaller than the size of the udphdr structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. CVE-2021-3592 An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the bootp_input() function and could occur while processing a udp packet that is smaller than the size of the bootp_t structure. A malicious guest could use this flaw to leak 10 bytes of uninitialized heap memory from the host. The highest threat from this vulnerability is to data confidentiality. CVE-2021-3595 An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the tftp_input() function and could occur while processing a udp packet that is smaller than the size of the tftp_t structure. This issue may lead to out-of-bounds read access or indirect host memory disclosure to the guest. The highest threat from this vulnerability is to data confidentiality. For Debian 9 stretch, these problems have been fixed in version 1:2.8+dfsg-6+deb9u15. We recommend that you upgrade your qemu packages. For the detailed security status of ... [Please see the references for more information on the vulnerabilities] Affected Software/OS: 'qemu' package(s) on Debian 9. Solution: Please install the updated package(s). CVSS Score: 6.0 CVSS Vector: AV:N/AC:M/Au:S/C:P/I:P/A:P
Cross-Ref:	Common Vulnerability Exposure (CVE) ID: CVE-2021-3527 GLSA-202208-27 https://security.gentoo.org/glsa/202208-27 [debian-lts-announce] 20210902 [SECURITY] [DLA 2753-1] qemu security update https://lists.debian.org/debian-lts-announce/2021/09/msg00000.html [debian-lts-announce] 20220905 [SECURITY] [DLA 3099-1] qemu security update https://lists.debian.org/debian-lts-announce/2022/09/msg00008.html https://bugzilla.redhat.com/show_bug.cgi?id=1955695 https://gitlab.com/qemu-project/qemu/-/commit/05a40b172e4d691371534828078be47e7fff524c https://gitlab.com/qemu-project/qemu/-/commit/7ec54f9eb62b5d177e30eb8b1cad795a5f8d8986 https://security.netapp.com/advisory/ntap-20210708-0008/ https://www.openwall.com/lists/oss-security/2021/05/05/5 Common Vulnerability Exposure (CVE) ID: CVE-2021-3594 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GCKWZWY64EHTOQMLVLTSZ4AA27EWRJMH/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/SGPQZFVJCFGDSISFXPCQTTBBD7QZLJKI/ https://security.gentoo.org/glsa/202107-44 https://bugzilla.redhat.com/show_bug.cgi?id=1970491 https://lists.debian.org/debian-lts-announce/2023/03/msg00013.html Common Vulnerability Exposure (CVE) ID: CVE-2021-3595 https://bugzilla.redhat.com/show_bug.cgi?id=1970489 Common Vulnerability Exposure (CVE) ID: CVE-2021-3682 Debian Security Information: DSA-4980 (Google Search) https://www.debian.org/security/2021/dsa-4980 https://bugzilla.redhat.com/show_bug.cgi?id=1989651 Common Vulnerability Exposure (CVE) ID: CVE-2021-3713 https://bugzilla.redhat.com/show_bug.cgi?id=1994640
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