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CVE-2021-3595

Status Candidate

Overview

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. This flaw affects libslirp versions prior to 4.6.0.

Related Files

Red Hat Security Advisory 2021-4191-03
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4191-03 - Kernel-based Virtual Machine offers a full virtualization solution for Linux on numerous hardware platforms. The virt:rhel module contains packages which provide user-space components used to run virtual machines using KVM. The packages also provide APIs for managing and interacting with the virtualized systems. Issues addressed include information leakage and use-after-free vulnerabilities.

tags | advisory, kernel, vulnerability
systems | linux, redhat
advisories | CVE-2020-15859, CVE-2021-3592, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595, CVE-2021-3631, CVE-2021-3667
SHA-256 | 64d7fbe0c9f1b5354e27b879038a2c6070838d3da6e94abfc2535d64c1665374
Ubuntu Security Notice USN-5009-2
Posted Oct 26, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5009-2 - USN-5009-1 fixed vulnerabilities in libslirp. This update provides the corresponding updates for Ubuntu 21.10. Qiuhao Li discovered that libslirp incorrectly handled certain header data lengths. An attacker inside a guest could possibly use this issue to leak sensitive information from the host. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. It was discovered that libslirp incorrectly handled certain udp packets. An attacker inside a guest could possibly use this issue to leak sensitive information from the host. Various other issues were also addressed.

tags | advisory, udp, vulnerability
systems | linux, ubuntu
advisories | CVE-2021-3592, CVE-2021-3595
SHA-256 | ce2d0a6dc03321b336b8d36625c5af6aa5d68903590a8cebdd7bc1782ec28808
Gentoo Linux Security Advisory 202107-44
Posted Jul 20, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202107-44 - Multiple vulnerabilities have been found in libslirp, the worst of which could result in a Denial of Service condition. Versions less than 4.6.0 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2021-3592, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595
SHA-256 | dee28e78c3c84064553d065f12f818eca29b2e7320918e9a0274937706eee3e5
Ubuntu Security Notice USN-5010-1
Posted Jul 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5010-1 - Lei Sun discovered that QEMU incorrectly handled certain MMIO operations. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. Wenxiang Qian discovered that QEMU incorrectly handled certain ATAPI commands. An attacker inside the guest could possibly use this issue to cause QEMU to crash, resulting in a denial of service. This issue only affected Ubuntu 21.04. Various other issues were also addressed.

tags | advisory, denial of service
systems | linux, ubuntu
advisories | CVE-2020-15469, CVE-2020-29443, CVE-2020-35505, CVE-2020-35517, CVE-2021-20221, CVE-2021-20257, CVE-2021-3392, CVE-2021-3409, CVE-2021-3416, CVE-2021-3527, CVE-2021-3544, CVE-2021-3545, CVE-2021-3546, CVE-2021-3593, CVE-2021-3594, CVE-2021-3595, CVE-2021-3608
SHA-256 | c4d63dc41ceb7caa0f49a3eacc4d8caaa17252efd4913df4a83ba610c5446f40
Ubuntu Security Notice USN-5009-1
Posted Jul 15, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5009-1 - Qiuhao Li discovered that libslirp incorrectly handled certain header data lengths. An attacker inside a guest could possibly use this issue to leak sensitive information from the host. This issue only affected Ubuntu 20.04 LTS and Ubuntu 20.10. It was discovered that libslirp incorrectly handled certain udp packets. An attacker inside a guest could possibly use this issue to leak sensitive information from the host. Various other issues were also addressed.

tags | advisory, udp
systems | linux, ubuntu
advisories | CVE-2020-29129, CVE-2021-3594, CVE-2021-3595
SHA-256 | 3df328646a71434fe2e1d5504ff218ec999fb6d3102937176e3146ec99041529
AKCP sensorProbe SPX476 Cross Site Scripting
Posted Jul 2, 2021
Authored by Tyler Butler | Site tbutler.org

AKCP sensorProbe SPX476 suffers from multiple cross site scripting vulnerabilities.

tags | exploit, vulnerability, xss
advisories | CVE-2021-35956
SHA-256 | 4b01f7cf128ccb5e814e42f93405c9bdc86368f52ff9931bc0701bebc03b59ae
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