Micro Focus Novell Groupwise up to 2014 R2 Service Pack 1 WebAccess/Post Office Agent Username/Password integer overflow

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CTI Interest Score
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A vulnerability was found in Micro Focus Novell Groupwise up to 2014 R2 Service Pack 1 (Groupware Software). It has been rated as critical. This issue affects some unknown functionality of the component WebAccess/Post Office Agent. The manipulation of the argument Username/Password with an unknown input leads to a integer overflow vulnerability. Using CWE to declare the problem leads to CWE-190. The software performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. Impacted is confidentiality, integrity, and availability.

The weakness was presented 08/25/2016 with SEC Consult as SA-20160825-0 as not defined mailinglist post (Full-Disclosure). The advisory is shared at seclists.org. The public release was coordinated in cooperation with Micro Focus. The identification of this vulnerability is CVE-2016-5762. 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 are known, but no exploit is available. The following code is the reason for this vulnerability:

((uint16_t) ((<length>) + 3) & 0xFFFC) + 1)
The advisory points out:
Therefore, a value of 65533 would cause the application to allocate 1 byte. By modifying this value accordingly, an attacker can cause the application to allocate an arbitrary amount of memory.

The vulnerability was handled as a non-public zero-day exploit for at least 51 days. During that time the estimated underground price was around $0-$5k.

Applying the patch 2014 R2 Service Pack 1 Hot Patch 1 is able to eliminate this problem. A possible mitigation has been published immediately after the disclosure of the vulnerability.

See 90951 and 90952 for similar entries.






  • commercial


  • end of life (version)

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

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



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

NVD Base Score: 🔍


Class: Integer overflow
CWE: CWE-190 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Threat Intelligenceinfo

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


Recommended: Patch
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Patch: 2014 R2 Service Pack 1 Hot Patch 1


06/23/2016 🔍
07/05/2016 +12 days 🔍
07/06/2016 +1 days 🔍
08/25/2016 +50 days 🔍
08/25/2016 +0 days 🔍
08/25/2016 +0 days 🔍
08/26/2016 +1 days 🔍
04/20/2017 +237 days 🔍
09/14/2022 +1973 days 🔍


Vendor: microfocus.com

Advisory: SA-20160825-0
Organization: SEC Consult
Status: Not defined
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2016-5762 (🔍)
SecurityFocus: 92642

See also: 🔍


Created: 08/26/2016 10:31 AM
Updated: 09/14/2022 10:45 AM
Changes: 08/26/2016 10:31 AM (55), 08/09/2017 02:08 PM (11), 09/14/2022 10:45 AM (2)
Complete: 🔍


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