QEMU hw/input/ps2.c rptr/count 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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8.9$0-$5k0.00

A vulnerability, which was classified as critical, has been found in QEMU (Virtualization Software) (the affected version unknown). Affected by this issue is an unknown part of the file hw/input/ps2.c. The manipulation of the argument rptr/count with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

hw/input/ps2.c in Qemu does not validate 'rptr' and 'count' values during guest migration, leading to out-of-bounds access.

The bug was discovered 11/16/2017. The weakness was presented 11/17/2017 (Website). The advisory is available at lists.gnu.org. This vulnerability is handled as CVE-2017-16845 since 11/16/2017. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k. The vulnerability scanner Nessus provides a plugin with the ID 107145 (Ubuntu 14.04 LTS / 16.04 LTS : qemu regression (USN-3575-2)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197060 (Ubuntu Security Notification for Qemu Vulnerabilities (USN-3575-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (107145). See 110190, 110312, 112687 and 122262 for similar entries.

Productinfo

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Name

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 9.1
VulDB Meta Temp Score: 8.9

VulDB Base Score: 8.3
VulDB Temp Score: 7.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 10.0
NVD Vector: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
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Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 107145
Nessus Name: Ubuntu 14.04 LTS / 16.04 LTS : qemu regression (USN-3575-2)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 840783
OpenVAS Name: SuSE Update for qemu openSUSE-SU-2018:0780-1 (qemu)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
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Timelineinfo

11/15/2017 🔍
11/16/2017 +1 days 🔍
11/16/2017 +0 days 🔍
11/17/2017 +1 days 🔍
11/17/2017 +0 days 🔍
11/18/2017 +1 days 🔍
03/05/2018 +107 days 🔍
03/06/2018 +1 days 🔍
01/10/2023 +1771 days 🔍

Sourcesinfo

Product: qemu.org

Advisory: USN-3575-2
Status: Not defined

CVE: CVE-2017-16845 (🔍)
OVAL: 🔍

SecurityFocus: 101923 - QEMU 'hw/input/ps2.c' Information Disclosure Vulnerability

See also: 🔍

Entryinfo

Created: 11/18/2017 08:58
Updated: 01/10/2023 19:40
Changes: 11/18/2017 08:58 (66), 12/08/2019 13:17 (14), 01/10/2023 19:32 (4), 01/10/2023 19:40 (1)
Complete: 🔍

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