VDB-99559 · CVE-2017-7618 · BID 97534

Linux Kernel up to 4.10.9 crypto/ahash.c infinite loop

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

A vulnerability classified as problematic was found in Linux Kernel up to 4.10.9 (Operating System). Affected by this vulnerability is an unknown code block of the file crypto/ahash.c. The manipulation with an unknown input leads to a infinite loop vulnerability. The CWE definition for the vulnerability is CWE-835. The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop. As an impact it is known to affect availability. The summary by CVE is:

crypto/ahash.c in the Linux kernel through 4.10.9 allows attackers to cause a denial of service (API operation calling its own callback, and infinite recursion) by triggering EBUSY on a full queue.

The bug was discovered 04/10/2017. The weakness was shared 04/10/2017 (Website). It is possible to read the advisory at marc.info. This vulnerability is known as CVE-2017-7618 since 04/10/2017. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1499 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 99423 (Fedora 25 : kernel (2017-26c9ecd7a4)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 276578 (Fedora Security Update for kernel (FEDORA-2017-26c9ecd7a4)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 1 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (99423) and SecurityFocus (BID 97534†).

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

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CVSSv3info

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: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Infinite loop
CWE: CWE-835 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Nessus ID: 99423
Nessus Name: Fedora 25 : kernel (2017-26c9ecd7a4)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 867773
OpenVAS Name: Fedora Update for kernel FEDORA-2017-8e7549fb91
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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Timelineinfo

04/10/2017 🔍
04/10/2017 +0 days 🔍
04/10/2017 +0 days 🔍
04/10/2017 +0 days 🔍
04/10/2017 +0 days 🔍
04/11/2017 +1 days 🔍
04/17/2017 +6 days 🔍
04/18/2017 +1 days 🔍
11/28/2022 +2050 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: FEDORA-2017-26c9ecd7a4
Status: Not defined
Confirmation: 🔍

CVE: CVE-2017-7618 (🔍)
SecurityFocus: 97534 - Linux Kernel CVE-2017-7618 Denial of Service Vulnerability
OSVDB: - CVE-2017-7618 - Linux - Denial of Service Issue

Entryinfo

Created: 04/11/2017 09:47 AM
Updated: 11/28/2022 09:14 AM
Changes: 04/11/2017 09:47 AM (75), 08/28/2020 05:16 PM (7), 11/28/2022 09:14 AM (4)
Complete: 🔍
Cache ID: 18:7D4:40

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