Memory leak in qemu (Alpine package)



Published: 2017-06-16
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2016-9105
CWE-ID CWE-401
Exploitation vector Local
Public exploit N/A
Vulnerable software
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qemu (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Memory leak

EUVDB-ID: #VU32089

Risk: Medium

CVSSv3.1: 5.2 [AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2016-9105

CWE-ID: CWE-401 - Missing release of memory after effective lifetime

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to memory leak within the v9fs_link function in hw/9pfs/9p.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (memory consumption) via vectors involving a reference to the source fid object. A remote attacker can perform a denial of service attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

qemu (Alpine package): 2.8.0-r1 - 2.8.1-r0

External links

http://git.alpinelinux.org/aports/commit/?id=64053e93d1b2192473cc16b8719d43e6b1c036a6
http://git.alpinelinux.org/aports/commit/?id=4fd42213196834bf5e7a33f83e9e6775606a9aba


Q & A

Can this vulnerability be exploited remotely?

No. This vulnerability can be exploited locally. The attacker should have authentication credentials and successfully authenticate on the system.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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