Linux Kernel 4.0.5 UDP Packet net/ipv6/udp.c resource management

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in Linux Kernel 4.0.5. The impacted element is an unknown function of the file net/ipv6/udp.c of the component UDP Packet Handler. The manipulation leads to resource management. This vulnerability is referenced as CVE-2015-5366. No exploit is available. Applying a patch is the recommended action to fix this issue.

Detailsinfo

A vulnerability was found in Linux Kernel 4.0.5 (Operating System) and classified as problematic. This issue affects an unknown code of the file net/ipv6/udp.c of the component UDP Packet Handler. The manipulation with an unknown input leads to a resource management vulnerability. Using CWE to declare the problem leads to CWE-399. Impacted is availability.

The weakness was published 07/01/2015 by Salvatore Bonaccorso as Bug 1239029 as confirmed bug report (Bugzilla). The advisory is shared at bugzilla.redhat.com. The identification of this vulnerability is CVE-2015-5366 since 07/06/2015. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available. The following code is the reason for this vulnerability: 

if (noblock)
   return -EAGAIN;
The advisory points out:
We return -EAGAIN to application even if receive queue is not empty. This breaks applications using edge trigger epoll()

The vulnerability scanner Nessus provides a plugin with the ID 84981 (Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2680-1)), 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 236015 (Red Hat Update forkernel security (RHSA-2016:1100)).

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 4 weeks after the disclosure of the vulnerability. The vulnerability will be addressed with the following lines of code:

cond_resched();
The bug report contains the following remark:
This patch is an attempt to make things better. We might in the future add extra support for rt applications wanting to better control time spent doing a recv() in a hostile environment. For example we could validate checksums before queuing packets in socket receive queue.

The vulnerability is also documented in the databases at X-Force (104417), Tenable (84981), SecurityFocus (BID 75510†) and Vulnerability Center (SBV-51610†). Similar entries are available at VDB-76324 and VDB-91460. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 4.6

VulDB Base Score: 5.3
VulDB Temp Score: 4.6
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource management
CWE: CWE-399 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 84981
Nessus Name: Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2680-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 703313
OpenVAS Name: Debian Security Advisory DSA 3313-1 (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

06/30/2015 🔍
06/30/2015 +0 days 🔍
07/01/2015 +1 days 🔍
07/06/2015 +4 days 🔍
07/08/2015 +2 days 🔍
07/23/2015 +14 days 🔍
07/24/2015 +1 days 🔍
07/27/2015 +3 days 🔍
08/31/2015 +35 days 🔍
05/23/2022 +2457 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1239029
Researcher: Salvatore Bonaccorso
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-5366 (🔍)
GCVE (CVE): GCVE-0-2015-5366
GCVE (VulDB): GCVE-100-76325

OVAL: 🔍

X-Force: 104417 - Linux Kernel UDP denial of service
SecurityFocus: 75510 - Linux Kernel Multiple Remote Denial of Service Vulnerability
SecurityTracker: 1032794
Vulnerability Center: 51610 - Linux Kernel Remote DoS via Packet with an Invalid Checksum - CVE-2015-5366, High

See also: 🔍

Entryinfo

Created: 07/08/2015 09:41
Updated: 05/23/2022 15:12
Changes: 07/08/2015 09:41 (76), 09/21/2018 10:34 (13), 05/23/2022 15:12 (4)
Complete: 🔍
Cache ID: 216:0FB:103

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