Linux Kernel 3.1.8 Netfilter nf_tables_api.c nft_flush_table data processing

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in Linux Kernel 3.1.8 and classified as problematic. Impacted is the function nft_flush_table of the file net/netfilter/nf_tables_api.c of the component Netfilter. The manipulation leads to data processing. This vulnerability is uniquely identified as CVE-2015-1573. Local access is required to approach this attack. No exploit exists. To fix this issue, it is recommended to deploy a patch.

Detailsinfo

A vulnerability was found in Linux Kernel 3.1.8 (Operating System) and classified as problematic. This issue affects the function nft_flush_table of the file net/netfilter/nf_tables_api.c of the component Netfilter. The manipulation with an unknown input leads to a data processing vulnerability. Using CWE to declare the problem leads to CWE-19. Impacted is availability.

The weakness was disclosed 02/10/2015 as confirmed mailinglist post (oss-sec). It is possible to read the advisory at seclists.org. The identification of this vulnerability is CVE-2015-1573 since 02/09/2015. The exploitation is known to be easy. Attacking locally is a requirement. A simple authentication is necessary for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The following code is the reason for this vulnerability: 

list_for_each_entry_safe(chain, nc, &ctx->table->chains, list) {

(...)

err = nft_delchain(ctx);
if (err < 0)
   goto out;

The vulnerability scanner Nessus provides a plugin with the ID 84358 (RHEL 7 : kernel-rt (RHSA-2015:1139)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Red Hat Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 123671 (CentOS Security Update for kernel (CESA-2015:1137)).

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 5 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at X-Force (100811), Tenable (84358), SecurityFocus (BID 72552†) and Vulnerability Center (SBV-50687†). Statistical analysis made it clear that VulDB provides the best quality 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: 5.1

VulDB Base Score: 5.5
VulDB Temp Score: 4.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Data processing
CWE: CWE-19
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84358
Nessus Name: RHEL 7 : kernel-rt (RHSA-2015:1139)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 66436
OpenVAS Name: RedHat Update for kernel RHSA-2015:1137-01
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

02/09/2015 🔍
02/09/2015 +0 days 🔍
02/10/2015 +0 days 🔍
02/10/2015 +0 days 🔍
02/11/2015 +1 days 🔍
06/23/2015 +131 days 🔍
06/24/2015 +1 days 🔍
06/24/2015 +0 days 🔍
05/02/2016 +313 days 🔍
03/09/2022 +2137 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: RHSA-2015:1139
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1573 (🔍)
GCVE (CVE): GCVE-0-2015-1573
GCVE (VulDB): GCVE-100-69107
X-Force: 100811 - Linux Kernel nftables rules denial of service, Medium Risk
SecurityFocus: 72552 - Linux Kernel 'nft_flush_table' Function Local Denial of Service Vulnerability
Vulnerability Center: 50687 - Linux Kernel <=3.1.8.1 Local DoS due to an Error in the nft_flush_table Function, Medium

Entryinfo

Created: 02/11/2015 09:29
Updated: 03/09/2022 05:26
Changes: 02/11/2015 09:29 (81), 09/24/2018 08:58 (11), 03/09/2022 05:03 (4), 03/09/2022 05:13 (1), 03/09/2022 05:26 (1)
Complete: 🔍
Cache ID: 216:BA7:103

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