Prosody up to 0.9.9 mod_dialback generate_dialback input validation

CVSS Meta Temp Score
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CTI Interest Score
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5.2$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in Prosody up to 0.9.9. The affected element is the function generate_dialback of the component mod_dialback. The manipulation leads to input validation. This vulnerability is referenced as CVE-2016-0756. Remote exploitation of the attack is possible. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Prosody up to 0.9.9 and classified as critical. This issue affects the function generate_dialback of the component mod_dialback. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, and integrity. The summary by CVE is:

The generate_dialback function in the mod_dialback module in Prosody before 0.9.10 does not properly separate fields when generating dialback keys, which allows remote attackers to spoof XMPP network domains via a crafted stream id and domain name that is included in the target domain as a suffix.

The weakness was published 01/29/2016 by Thijs Alkemade (Website). It is possible to read the advisory at blog.prosody.im. The identification of this vulnerability is CVE-2016-0756 since 12/15/2015. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 88466 (FreeBSD : prosody -- user impersonation vulnerability (50394bc9-c5fa-11e5-96a5-d93b343d1ff7)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family FreeBSD Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 124680 (Fedora Security Update for prosody (FEDORA-2016-e2c5111eda)).

Upgrading to version 0.9.10 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (88466), SecurityFocus (BID 82241†) and Vulnerability Center (SBV-56625†). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.2

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 88466
Nessus Name: FreeBSD : prosody -- user impersonation vulnerability (50394bc9-c5fa-11e5-96a5-d93b343d1ff7)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703463
OpenVAS Name: Debian Security Advisory DSA 3463-1 (prosody - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Prosody 0.9.10

Timelineinfo

12/15/2015 🔍
01/26/2016 +42 days 🔍
01/26/2016 +0 days 🔍
01/27/2016 +1 days 🔍
01/28/2016 +1 days 🔍
01/29/2016 +0 days 🔍
01/29/2016 +0 days 🔍
02/01/2016 +3 days 🔍
02/16/2016 +15 days 🔍
10/27/2024 +3175 days 🔍

Sourcesinfo

Advisory: FEDORA-2016-5a5c85c5a8
Researcher: Thijs Alkemade
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-0756 (🔍)
GCVE (CVE): GCVE-0-2016-0756
GCVE (VulDB): GCVE-100-80735
SecurityFocus: 82241 - Prosody XMPP Server CVE-2016-0756 Security Bypass Vulnerability
Vulnerability Center: 56625 - Prosody before 0.9.10 Remote Spoofing in the Mod_dialback Module, Medium

Entryinfo

Created: 02/01/2016 10:42
Updated: 10/27/2024 03:16
Changes: 02/01/2016 10:42 (61), 08/23/2018 07:23 (20), 07/06/2022 15:36 (4), 10/27/2024 03:16 (18)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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