XenSource Xen linux-2.6.18-xen-3.4.0 usbback.c information disclosure

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability identified as problematic has been detected in XenSource Xen. This affects an unknown function of the file drivers/xen/usbback/usbback.c of the component linux-2.6.18-xen-3.4.0. Performing a manipulation results in information disclosure. This vulnerability was named CVE-2015-0777. There is no available exploit.

Detailsinfo

A vulnerability was found in XenSource Xen (Virtualization Software) (affected version not known). It has been classified as problematic. This affects some unknown functionality of the file drivers/xen/usbback/usbback.c of the component linux-2.6.18-xen-3.4.0. The manipulation with an unknown input leads to a information disclosure vulnerability. CWE is classifying the issue as CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. This is going to have an impact on confidentiality. The summary by CVE is:

drivers/xen/usbback/usbback.c in linux-2.6.18-xen-3.4.0 (aka the Xen 3.4.x support patches for the Linux kernel 2.6.18), as used in the Linux kernel 2.6.x and 3.x in SUSE Linux distributions, allows guest OS users to obtain sensitive information from uninitialized locations in host OS kernel memory via unspecified vectors.

The weakness was presented 04/05/2015 by Jan Beulich with SuSE as Bug 917830 as not defined bug report (Bugzilla). It is possible to read the advisory at bugzilla.novell.com. This vulnerability is uniquely identified as CVE-2015-0777 since 01/07/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/02/2022). The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 83709 (SUSE SLED12 / SLES12 Security Update : Security Update for Linux Kernel (SUSE-SU-2015:0658-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168480 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2016:0301-1)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (83709), SecurityFocus (BID 73014†) and Vulnerability Center (SBV-49347†). See VDB-12676, VDB-73983, VDB-75569 and VDB-75705 for similar entries. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Information disclosure
CWE: CWE-200 / CWE-284 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 83709
Nessus Name: SUSE SLED12 / SLES12 Security Update : Security Update for Linux Kernel (SUSE-SU-2015:0658-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 850584
OpenVAS Name: SuSE Update for the openSUSE-SU-2016:0301-1 (kernel)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/07/2015 🔍
03/10/2015 +62 days 🔍
04/05/2015 +26 days 🔍
04/05/2015 +0 days 🔍
04/05/2015 +0 days 🔍
04/06/2015 +1 days 🔍
04/06/2015 +0 days 🔍
05/20/2015 +44 days 🔍
05/02/2022 +2539 days 🔍

Sourcesinfo

Vendor: citrix.com

Advisory: Bug 917830
Researcher: Jan Beulich
Organization: SuSE
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-0777 (🔍)
GCVE (CVE): GCVE-0-2015-0777
GCVE (VulDB): GCVE-100-74643
SecurityFocus: 73014 - Xen CVE-2015-2150 Denial of Service Vulnerability
Vulnerability Center: 49347 - Linux Kernel <2.6.32 Local Information Disclosure in xen/usbback/usbback.c, Medium

See also: 🔍

Entryinfo

Created: 04/06/2015 09:13
Updated: 05/02/2022 16:57
Changes: 04/06/2015 09:13 (67), 06/24/2017 09:45 (9), 05/02/2022 16:57 (3)
Complete: 🔍
Cache ID: 216:C6C:103

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