QEMU hw/char/serial.c serial_exit_core resource management

CVSS Meta Temp Score
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CTI Interest Score
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5.0$0-$5k0.00

Summaryinfo

A vulnerability categorized as problematic has been discovered in QEMU. The affected element is the function serial_exit_core of the file hw/char/serial.c. The manipulation results in resource management. This vulnerability was named CVE-2017-5579. The attack needs to be approached locally. There is no available exploit. It is advisable to implement a patch to correct this issue.

Detailsinfo

A vulnerability, which was classified as problematic, was found in QEMU (Virtualization Software) (affected version unknown). Affected is the function serial_exit_core of the file hw/char/serial.c. The manipulation with an unknown input leads to a resource management vulnerability. CWE is classifying the issue as CWE-399. This is going to have an impact on availability. CVE summarizes:

Memory leak in the serial_exit_core function in hw/char/serial.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption and QEMU process crash) via a large number of device unplug operations.

The bug was discovered 01/23/2017. The weakness was presented 03/15/2017 by Prasad J Pandit (oss-sec). The advisory is shared for download at openwall.com. This vulnerability is traded as CVE-2017-5579 since 01/25/2017. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 29 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 97271 (GLSA-201702-28 : QEMU: Multiple vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Gentoo Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 169803 (SUSE Enterprise Linux Security Update for xen (SUSE-SU-2017:0647-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu-project.org. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (97271) and SecurityFocus (BID 95780†). See VDB-98151, VDB-98123, VDB-98146 and VDB-98147 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.2
VulDB Meta Temp Score: 5.1

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 97271
Nessus Name: GLSA-201702-28 : QEMU: Multiple vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for qemu FEDORA-2017-01925dba3c
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Patch: git.qemu-project.org

Timelineinfo

01/23/2017 🔍
01/25/2017 +2 days 🔍
01/25/2017 +0 days 🔍
02/21/2017 +27 days 🔍
02/21/2017 +0 days 🔍
03/15/2017 +22 days 🔍
03/15/2017 +0 days 🔍
03/16/2017 +1 days 🔍
09/08/2020 +1272 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: openwall.com
Researcher: Prasad J Pandit
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-5579 (🔍)
GCVE (CVE): GCVE-0-2017-5579
GCVE (VulDB): GCVE-100-98148
SecurityFocus: 95780 - QEMU CVE-2017-5579 Denial of Service Vulnerability
OSVDB: - CVE-2017-5579 - QEMU - Denial of Service Issue

See also: 🔍

Entryinfo

Created: 03/16/2017 13:36
Updated: 09/08/2020 16:06
Changes: 03/16/2017 13:36 (78), 09/08/2020 16:06 (3)
Complete: 🔍
Cache ID: 216::103

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