Open-Xchange OX Guard up to 2.4.0-rev7 auth Padding credentials management

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

A vulnerability classified as critical has been found in Open-Xchange OX Guard up to 2.4.0-rev7. This affects some unknown functionality. The manipulation of the argument auth with an unknown input leads to a credentials management vulnerability (Padding). CWE is classifying the issue as CWE-255. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An issue was discovered in Open-Xchange OX Guard before 2.4.0-rev8. OX Guard uses an authentication token to identify and transfer guest users credentials. The OX Guard API acts as a padding oracle by responding with different error codes depending on whether the provided token matches the encryption padding. In combination with AES-CBC, this allows attackers to guess the correct padding. Attackers may run brute-forcing attacks on the content of the guest authentication token and discover user credentials. For a practical attack vector, the guest users needs to have logged in, the content of the guest user's "OxReaderID" cookie and the value of the "auth" parameter needs to be known to the attacker.

The bug was discovered 06/22/2016. The weakness was shared 12/15/2016 (Website). The advisory is shared at securityfocus.com. This vulnerability is uniquely identified as CVE-2016-4028 since 04/15/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1552 for this issue.

The vulnerability was handled as a non-public zero-day exploit for at least 176 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 2.4.0-rev8 eliminates this vulnerability.

The entries 94507, 94510, 94511 and 94512 are related to this item.

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
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

Name: Padding
Class: Credentials management / Padding
CWE: CWE-255
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: OX Guard 2.4.0-rev8

Timelineinfo

04/15/2016 🔍
06/22/2016 +68 days 🔍
12/15/2016 +176 days 🔍
12/15/2016 +0 days 🔍
12/15/2016 +0 days 🔍
10/08/2022 +2123 days 🔍

Sourcesinfo

Vendor: open-xchange.com

Advisory: securityfocus.com⛔
Status: Not defined

CVE: CVE-2016-4028 (🔍)
SecurityTracker: 1036154

See also: 🔍

Entryinfo

Created: 12/15/2016 16:51
Updated: 10/08/2022 18:40
Changes: 12/15/2016 16:51 (59), 07/08/2019 06:35 (2), 10/08/2022 18:40 (4)
Complete: 🔍

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