Vulnerabilities > CVE-2015-8556 - Race Condition vulnerability in Qemu
Attack vector
NETWORK Attack complexity
LOW Privileges required
NONE Confidentiality impact
HIGH Integrity impact
HIGH Availability impact
HIGH Summary
Local privilege escalation vulnerability in the Gentoo QEMU package before 2.5.0-r1.
Vulnerable Configurations
Common Weakness Enumeration (CWE)
Common Attack Pattern Enumeration and Classification (CAPEC)
- Leveraging Race Conditions This attack targets a race condition occurring when multiple processes access and manipulate the same resource concurrently and the outcome of the execution depends on the particular order in which the access takes place. The attacker can leverage a race condition by "running the race", modifying the resource and modifying the normal execution flow. For instance a race condition can occur while accessing a file, the attacker can trick the system by replacing the original file with his version and cause the system to read the malicious file.
- Leveraging Time-of-Check and Time-of-Use (TOCTOU) Race Conditions This attack targets a race condition occurring between the time of check (state) for a resource and the time of use of a resource. The typical example is the file access. The attacker can leverage a file access race condition by "running the race", meaning that he would modify the resource between the first time the target program accesses the file and the time the target program uses the file. During that period of time, the attacker could do something such as replace the file and cause an escalation of privilege.
Exploit-Db
description | Gentoo Local Priv Escalation in QEMU. CVE-2015-8556. Local exploit for linux platform |
file | exploits/linux/local/39010.c |
id | EDB-ID:39010 |
last seen | 2016-02-04 |
modified | 2015-12-17 |
platform | linux |
port | |
published | 2015-12-17 |
reporter | zx2c4 |
source | https://www.exploit-db.com/download/39010/ |
title | Gentoo Local Priv Escalation in QEMU |
type | local |
Nessus
NASL family | Gentoo Local Security Checks |
NASL id | GENTOO_GLSA-201602-01.NASL |
description | The remote host is affected by the vulnerability described in GLSA-201602-01 (QEMU: Multiple vulnerabilities) Multiple vulnerabilities have been discovered in QEMU. Please review the CVE identifiers referenced below for details. Impact : A remote attacker might cause a Denial of Service or gain escalated privileges from a guest VM. Workaround : There is no known workaround at this time. |
last seen | 2020-06-01 |
modified | 2020-06-02 |
plugin id | 88587 |
published | 2016-02-05 |
reporter | This script is Copyright (C) 2016-2019 and is owned by Tenable, Inc. or an Affiliate thereof. |
source | https://www.tenable.com/plugins/nessus/88587 |
title | GLSA-201602-01 : QEMU: Multiple vulnerabilities (Venom) |
code |
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Packetstorm
data source | https://packetstormsecurity.com/files/download/134948/virtfshell-exec.txt |
id | PACKETSTORM:134948 |
last seen | 2016-12-05 |
published | 2015-12-17 |
reporter | zx2c4 |
source | https://packetstormsecurity.com/files/134948/Gentoo-QEMU-Local-Privilege-Escalation.html |
title | Gentoo QEMU Local Privilege Escalation |