OpenAFS up to 1.6.21 Rx ack Packet integer underflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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A vulnerability classified as problematic was found in OpenAFS up to 1.6.21 (File Transfer Software). Affected by this vulnerability is an unknown functionality of the component Rx ack Packet Handler. The manipulation with an unknown input leads to a integer underflow vulnerability. The CWE definition for the vulnerability is CWE-191. The product subtracts one value from another, such that the result is less than the minimum allowable integer value, which produces a value that is not equal to the correct result. As an impact it is known to affect availability.

The weakness was released 12/06/2017 (Website). It is possible to read the advisory at This vulnerability is known as CVE-2017-17432 since 12/05/2017. 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 vulnerability scanner Nessus provides a plugin with the ID 105331 (Debian DSA-4067-1 : 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. 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 1.6.22 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (105331). Entries connected to this vulnerability are available at 87403 and 96580.





  • open-source

CPE 2.3info

CPE 2.2info


VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍



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Class: Integer underflow
CWE: CWE-191 / CWE-189
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍


Nessus ID: 105331
Nessus Name: Debian DSA-4067-1 : openafs - security update
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 860952
OpenVAS Name: Debian Security Advisory DSA 4067-1 (openafs - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Recommended: Upgrade
Status: 🔍
Upgrade: OpenAFS 1.6.22


12/05/2017 🔍
12/05/2017 +0 days 🔍
12/06/2017 +1 days 🔍
12/06/2017 +0 days 🔍
01/17/2023 +1868 days 🔍


Advisory: DLA 1213-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-17432 (🔍)
See also: 🔍


Created: 12/06/2017 08:12 AM
Updated: 01/17/2023 08:30 AM
Changes: 12/06/2017 08:12 AM (40), 11/09/2019 01:03 PM (29), 01/25/2021 07:05 PM (3), 01/25/2021 07:12 PM (1), 01/17/2023 08:30 AM (3)
Complete: 🔍


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