Input validation error in QEMU



| Updated: 2020-08-04
Risk Low
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2015-4037
CWE-ID CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software
 QEMU
Client/Desktop applications / Virtualization software

Vendor QEMU

Security Bulletin

This security bulletin contains one low risk vulnerability.

1) Input validation error

EUVDB-ID: #VU33813

Risk: Low

CVSSv4.0: 1 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2015-4037

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote non-authenticated attacker to perform service disruption.

The slirp_smb function in net/slirp.c in QEMU 2.3.0 and earlier creates temporary files with predictable names, which allows local users to cause a denial of service (instantiation failure) by creating /tmp/qemu-smb.*-* files before the program.

Mitigation

Install update from vendor's website.

Vulnerable software versions

QEMU: 2.0 - 2.3.0

CPE2.3 External links

https://lists.fedoraproject.org/pipermail/package-announce/2015-June/160058.html
https://lists.fedoraproject.org/pipermail/package-announce/2015-June/160414.html
https://lists.opensuse.org/opensuse-security-announce/2015-06/msg00027.html
https://lists.opensuse.org/opensuse-security-announce/2015-09/msg00015.html
https://lists.opensuse.org/opensuse-updates/2015-11/msg00063.html
https://www.debian.org/security/2015/dsa-3284
https://www.debian.org/security/2015/dsa-3285
https://www.openwall.com/lists/oss-security/2015/05/13/7
https://www.openwall.com/lists/oss-security/2015/05/16/5
https://www.openwall.com/lists/oss-security/2015/05/23/4
https://www.securityfocus.com/bid/74809
https://www.securitytracker.com/id/1032547
https://www.ubuntu.com/usn/USN-2630-1
https://bugzilla.redhat.com/show_bug.cgi?id=1222892


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to open a a specially crafted file.

Is there known malware, which exploits this vulnerability?

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



###SIDEBAR###