Linux Kernel up to 4.16 net/irda/af_irda.c irda_setsockopt Object use after free

CVSS Meta Temp Score
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CTI Interest Score
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5.5$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Linux Kernel up to 4.16. This vulnerability affects the function irda_setsockopt of the file net/irda/af_irda.c. The manipulation as part of Object results in use after free. This vulnerability was named CVE-2018-6555. The attack needs to be approached locally. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 4.16 (Operating System). Affected is the function irda_setsockopt of the file net/irda/af_irda.c. The manipulation as part of a Object leads to a use after free vulnerability. CWE is classifying the issue as CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. This is going to have an impact on availability. CVE summarizes:

The irda_setsockopt function in net/irda/af_irda.c and later in drivers/staging/irda/net/af_irda.c in the Linux kernel before 4.17 allows local users to cause a denial of service (ias_object use-after-free and system crash) or possibly have unspecified other impact via an AF_IRDA socket.

The bug was discovered 09/04/2018. The weakness was presented 09/04/2018 (Website). The advisory is shared for download at spinics.net. This vulnerability is traded as CVE-2018-6555 since 02/01/2018. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

The vulnerability scanner Nessus provides a plugin with the ID 117523 (openSUSE Security Update : the Linux Kernel (openSUSE-2018-1016)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 171601 (SUSE Enterprise Linux Security Update for the Linux Kernel (SUSE-SU-2018:2879-1)).

Upgrading to version 4.17 eliminates this vulnerability. A possible mitigation has been published 2 weeks after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (117523) and SecurityFocus (BID 105304†). See VDB-123038, VDB-123100, VDB-123273 and VDB-123461 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.5
VulDB Meta Temp Score: 5.5

VulDB Base Score: 3.3
VulDB Temp Score: 3.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 117523
Nessus Name: openSUSE Security Update : the Linux Kernel (openSUSE-2018-1016)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 4.17

Timelineinfo

02/01/2018 🔍
09/04/2018 +214 days 🔍
09/04/2018 +0 days 🔍
09/04/2018 +0 days 🔍
09/05/2018 +1 days 🔍
09/16/2018 +11 days 🔍
09/17/2018 +1 days 🔍
05/07/2023 +1693 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-3775-1
Status: Confirmed

CVE: CVE-2018-6555 (🔍)
GCVE (CVE): GCVE-0-2018-6555
GCVE (VulDB): GCVE-100-123588

OVAL: 🔍

SecurityFocus: 105304

See also: 🔍

Entryinfo

Created: 09/05/2018 06:48
Updated: 05/07/2023 08:46
Changes: 09/05/2018 06:48 (78), 03/20/2020 16:01 (2), 05/07/2023 08:46 (4)
Complete: 🔍
Cache ID: 216::103

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