Linux Kernel AIO Interface fs/aio.c integer overflow

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CTI Interest Score
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7.3$0-$5k0.00

Summaryinfo

A vulnerability identified as critical has been detected in Linux Kernel. The affected element is an unknown function of the file fs/aio.c of the component AIO Interface. Performing a manipulation results in integer overflow. This vulnerability was named CVE-2015-8830. The attack needs to be approached locally. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability classified as critical has been found in Linux Kernel (Operating System) (affected version not known). This affects some unknown functionality of the file fs/aio.c of the component AIO Interface. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product 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. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was presented 03/01/2016 as confirmed mailinglist post (oss-sec). The advisory is shared at seclists.org. This vulnerability is uniquely identified as CVE-2015-8830 since 03/01/2016. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details are known, but no exploit is available. The reason for this vulnerability is this part of code: 

static ssize_t aio_setup_single_vector(struct kiocb *kiocb)

The vulnerability scanner Nessus provides a plugin with the ID 91090 (Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2969-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Ubuntu Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 157849 (Oracle Enterprise Linux Security Update for kernel (ELSA-2018-3083)).

Applying a patch is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. A possible mitigation has been published 3 months after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

static ssize_t aio_setup_single_vector(int type, struct file * file, struct kiocb *kiocb)

The vulnerability is also documented in the databases at X-Force (111186), Tenable (91090) and SecurityFocus (BID 103960†). See VDB-81152, VDB-81363, VDB-81364 and VDB-81365 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.3

VulDB Base Score: 7.8
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

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

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 91090
Nessus Name: Ubuntu 14.04 LTS : linux-lts-utopic vulnerabilities (USN-2969-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703503
OpenVAS Name: Debian Security Advisory DSA 3503-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: git.kernel.org

Timelineinfo

03/01/2016 🔍
03/01/2016 +0 days 🔍
03/03/2016 +1 days 🔍
05/02/2016 +60 days 🔍
05/09/2016 +6 days 🔍
05/12/2016 +3 days 🔍
07/09/2022 +2249 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: USN-2969-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-8830 (🔍)
GCVE (CVE): GCVE-0-2015-8830
GCVE (VulDB): GCVE-100-81153

OVAL: 🔍

X-Force: 111186 - Linux Kernel AIO interface integer overflow
SecurityFocus: 103960

See also: 🔍

Entryinfo

Created: 03/03/2016 10:53
Updated: 07/09/2022 06:28
Changes: 03/03/2016 10:53 (66), 09/21/2018 08:54 (18), 07/09/2022 06:18 (4), 07/09/2022 06:28 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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