Opera Web Browser up to 7.22 File Download privileges management

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.
6.3	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Opera Web Browser up to 7.22. This vulnerability affects unknown code of the component File Download Handler. The manipulation with the input %5C leads to privileges management. The attack may be initiated remotely. In addition, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Opera Web Browser up to 7.22 (Web Browser). This issue affects some unknown functionality of the component File Download Handler. The manipulation with the input value %5C leads to a privileges management vulnerability. Using CWE to declare the problem leads to CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. Impacted is confidentiality, integrity, and availability.

The bug was discovered 10/09/2003. The weakness was presented 12/12/2003 by imagine and nesumin with Operash (Website). It is possible to read the advisory at opera.rainyblue.org. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details as well as a public exploit are known. The attack technique deployed by this issue is T1068 according to MITRE ATT&CK.

The exploit is available at opera.rainyblue.org. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 64 days. During that time the estimated underground price was around $5k-$25k.

Upgrading to version 7.23 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at opera.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at X-Force (13977), SecurityFocus (BID 9279†), OSVDB (3017†) and Secunia (SA10425†). heise.de is providing further details. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Web Browser

Vendor

Opera

Name

Web Browser

Version

License

free

Website

Vendor: https://www.opera.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.0
VulDB Meta Temp Score: 6.3

VulDB Base Score: 7.0
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Browser 7.23
Patch: opera.com

Timelineinfo

10/09/2003 🔍
12/12/2003 +64 days 🔍
12/13/2003 +1 days 🔍
12/15/2003 +1 days 🔍
12/23/2003 +8 days 🔍
04/22/2019 +5599 days 🔍

Sourcesinfo

Vendor: opera.com

Advisory: opera.rainyblue.org
Researcher: imagine, nesumin
Organization: Operash
Status: Confirmed

GCVE (VulDB): GCVE-100-443
X-Force: 13977 - Opera insecure temporary file directory traversal, Medium Risk
SecurityFocus: 9279 - Opera Relative Path Directory Traversal File Corruption Vulnerability
Secunia: 10425 - Opera Browser Arbitrary File Deletion Vulnerability, Moderately Critical
OSVDB: 3017 - Opera File Download Encoded Traversal Arbitrary File Deletion

scip Labs: https://www.scip.ch/en/?labs.20161013
Misc.: 🔍

Entryinfo

Created: 12/15/2003 10:05
Updated: 04/22/2019 10:51
Changes: 12/15/2003 10:05 (72), 04/22/2019 10:51 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.