OESA-2021-1411

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OESA-2021-1411

Summary: qemu security update

Details: QEMU is a FAST! processor emulator using dynamic translation to achieve good emulation speed. Security Fix(es): An invalid pointer initialization issue was found in the SLiRP networking implementation of QEMU. The flaw exists in the udp6_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-2021-3593) 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-2021-3592) 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.(CVE-2021-3595)

References: https://www.openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1411, https://nvd.nist.gov/vuln/detail/CVE-2021-3593, https://nvd.nist.gov/vuln/detail/CVE-2021-3592, https://nvd.nist.gov/vuln/detail/CVE-2021-3595