VDB-87403 · CVE-2016-4536 · Qualys 176253

OpenAFS up to 1.6.16 RPC Call Memory information disclosure

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability has been found in OpenAFS up to 1.6.16 (File Transfer Software) and classified as critical. Affected by this vulnerability is an unknown functionality of the component RPC Call Handler. The manipulation with an unknown input leads to a information disclosure vulnerability (Memory). The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

The client in OpenAFS before 1.6.17 does not properly initialize the (1) AFSStoreStatus, (2) AFSStoreVolumeStatus, (3) VldbListByAttributes, and (4) ListAddrByAttributes structures, which might allow remote attackers to obtain sensitive memory information by leveraging access to RPC call traffic.

The weakness was presented 05/13/2016 (Website). It is possible to read the advisory at openafs.org. This vulnerability is known as CVE-2016-4536 since 05/05/2016. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1592 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 91360 (Debian DLA-493-1 : openafs security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176253 (Debian Security Update for openafs (DSA 4067-1)).

Upgrading to version 1.6.17 eliminates this vulnerability. A possible mitigation has been published 3 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (91360). See 96580 and 110251 for similar entries.

Productinfo

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Name

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
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CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.3
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Name: Memory
Class: Information disclosure / Memory
CWE: CWE-200 / CWE-284 / CWE-266
ATT&CK: T1592

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91360
Nessus Name: Debian DLA-493-1 : openafs security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 840466
OpenVAS Name: OpenAFS Multiple Vulnerabilities (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: OpenAFS 1.6.17

Timelineinfo

05/05/2016 🔍
05/13/2016 +8 days 🔍
05/13/2016 +0 days 🔍
05/16/2016 +3 days 🔍
05/29/2016 +13 days 🔍
05/31/2016 +2 days 🔍
11/26/2018 +909 days 🔍

Sourcesinfo

Advisory: openafs.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-4536 (🔍)
See also: 🔍

Entryinfo

Created: 05/16/2016 09:42
Updated: 11/26/2018 10:12
Changes: 05/16/2016 09:42 (66), 11/26/2018 10:12 (11)
Complete: 🔍

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