Microsec e-Szigno up to 3.2.7.11 XML Signature e-akta Signed Document xml injection

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.
8.1$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Microsec e-Szigno up to 3.2.7.11. This impacts an unknown function of the component XML Signature Handler. Performing a manipulation as part of e-akta Signed Document results in xml injection. This vulnerability is known as CVE-2015-3931. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in Microsec e-Szigno up to 3.2.7.11. This affects some unknown processing of the component XML Signature Handler. The manipulation as part of a e-akta Signed Document leads to a xml injection vulnerability. CWE is classifying the issue as CWE-91. The product does not properly neutralize special elements that are used in XML, allowing attackers to modify the syntax, content, or commands of the XML before it is processed by an end system. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Microsec e-Szigno before 3.2.7.12 allows remote attackers to perform XML signature wrapping attacks via an e-akta signed document with a ds:Object node with a crafted payload prepended to a valid ds:Object.

The bug was discovered 06/26/2015. The weakness was published 07/21/2017 with SEARCH-LAB Ltd. (Website). It is possible to read the advisory at packetstormsecurity.com. This vulnerability is uniquely identified as CVE-2015-3931 since 05/12/2015. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1505 according to MITRE ATT&CK.

The vulnerability was handled as a non-public zero-day exploit for at least 756 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 3.2.7.12 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 75487†). Similar entry is available at VDB-104356. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.3
VulDB Meta Temp Score: 8.1

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Xml injection
CWE: CWE-91 / CWE-74 / CWE-707
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: e-Szigno 3.2.7.12

Timelineinfo

05/12/2015 🔍
06/26/2015 +45 days 🔍
06/26/2015 +0 days 🔍
07/21/2017 +756 days 🔍
07/21/2017 +0 days 🔍
07/22/2017 +1 days 🔍
12/13/2022 +1970 days 🔍

Sourcesinfo

Advisory: 132473
Researcher: SEARCH-LAB Ltd.
Organization: SEARCH-LAB Ltd.
Status: Not defined

CVE: CVE-2015-3931 (🔍)
GCVE (CVE): GCVE-0-2015-3931
GCVE (VulDB): GCVE-100-104355
SecurityFocus: 75487 - Microsec e-Szigno CVE-2015-3931 XML Digital Signature Spoofing Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 07/22/2017 09:40
Updated: 12/13/2022 13:59
Changes: 07/22/2017 09:40 (65), 10/31/2019 09:25 (1), 01/06/2021 08:51 (2), 12/13/2022 13:59 (3)
Complete: 🔍
Cache ID: 216::103

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

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you want to use VulDB in your project?

Use the official API to access entries easily!