VDB-146137 · CVE-2015-7810 · BID 72769

libbluray JAR File MountManager toctou

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
4.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in libbluray. It has been classified as problematic. This affects the function MountManager of the component JAR File Handler. This manipulation causes toctou. This vulnerability is tracked as CVE-2015-7810. The attack is restricted to local execution. No exploit exists. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability has been found in libbluray (unknown version) and classified as problematic. Affected by this vulnerability is the function MountManager of the component JAR File Handler. The manipulation with an unknown input leads to a toctou vulnerability. The CWE definition for the vulnerability is CWE-367. The product checks the state of a resource before using that resource, but the resource's state can change between the check and the use in a way that invalidates the results of the check. This can cause the product to perform invalid actions when the resource is in an unexpected state. As an impact it is known to affect integrity, and availability. The summary by CVE is:

libbluray MountManager class has a time-of-check time-of-use (TOCTOU) race when expanding JAR files

The bug was discovered 10/12/2015. The weakness was disclosed 11/22/2019 by Florian Weimer with Red Hat. This vulnerability is known as CVE-2015-7810 since 10/12/2015. An attack has to be approached locally. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

The vulnerability was handled as a non-public zero-day exploit for at least 1502 days. During that time the estimated underground price was around $0-$5k.

Applying a patch is able to eliminate this problem.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 72769†). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

libbluray

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.7
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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💳	💳	💳	💳	💳	💳
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Toctou
CWE: CWE-367 / CWE-362
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

0-Day Time: 🔍

Timelineinfo

02/23/2015 🔍
10/12/2015 +231 days 🔍
10/12/2015 +0 days 🔍
11/22/2019 +1502 days 🔍
11/23/2019 +1 days 🔍
02/26/2024 +1556 days 🔍

Sourcesinfo

Advisory: openwall.com
Researcher: Florian Weimer
Organization: Red Hat
Status: Not defined

CVE: CVE-2015-7810 (🔍)
GCVE (CVE): GCVE-0-2015-7810
GCVE (VulDB): GCVE-100-146137
SecurityFocus: 72769 - libbluray Symlink Attack Local Security Bypass Vulnerability

Entryinfo

Created: 11/23/2019 09:02
Updated: 02/26/2024 14:17
Changes: 11/23/2019 09:02 (40), 11/23/2019 09:07 (21), 02/26/2024 14:17 (4)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.