QEMU hw/display/cirrus_vga.c cirrus_invalidate_region out-of-bounds

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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4.2$0-$5k0.00

Summaryinfo

A vulnerability was found in QEMU. It has been classified as critical. This impacts the function cirrus_invalidate_region of the file hw/display/cirrus_vga.c. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2017-18030. The attack is only possible with local access. There is not any exploit available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability, which was classified as critical, was found in QEMU (Virtualization Software) (unknown version). This affects the function cirrus_invalidate_region of the file hw/display/cirrus_vga.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The cirrus_invalidate_region function in hw/display/cirrus_vga.c in Qemu allows local OS guest privileged users to cause a denial of service (out-of-bounds array access and QEMU process crash) via vectors related to negative pitch.

The bug was discovered 01/15/2018. The weakness was released 01/23/2018 (oss-sec). The advisory is shared at openwall.com. This vulnerability is uniquely identified as CVE-2017-18030 since 01/13/2018. The exploitability is told to be easy. An attack has to be approached locally. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 106864 (openSUSE Security Update : xen (openSUSE-2018-169) (Meltdown) (Spectre)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 170761 (SUSE Enterprise Linux Security Update for xen (SUSE-SU-2018:0438-1)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.qemu.org. A possible mitigation has been published 4 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (106864) and SecurityFocus (BID 102520†). Entries connected to this vulnerability are available at VDB-110558, VDB-110559, VDB-110560 and VDB-110561. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.2

VulDB Base Score: 4.2
VulDB Temp Score: 4.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.4
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
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: 106864
Nessus Name: openSUSE Security Update : xen (openSUSE-2018-169) (Meltdown) (Spectre)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800316
OpenVAS Name: SuSE Update for xen openSUSE-SU-2018:0459-1 (xen)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: f153b563f8cf121aebf5a2fff5f0110faf58ccb3

Timelineinfo

01/13/2018 🔍
01/15/2018 +1 days 🔍
01/15/2018 +0 days 🔍
01/23/2018 +8 days 🔍
01/23/2018 +0 days 🔍
01/24/2018 +1 days 🔍
02/16/2018 +23 days 🔍
02/16/2018 +0 days 🔍
02/02/2023 +1812 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: DLA 1497-1
Researcher: Prasad J Pandit
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-18030 (🔍)
GCVE (CVE): GCVE-0-2017-18030
GCVE (VulDB): GCVE-100-112341
SecurityFocus: 102520

See also: 🔍

Entryinfo

Created: 01/24/2018 08:00
Updated: 02/02/2023 13:39
Changes: 01/24/2018 08:00 (77), 12/27/2019 08:18 (2), 02/01/2021 15:01 (5), 02/02/2023 13:39 (4)
Complete: 🔍
Cache ID: 216::103

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