Linux Kernel 3.18.7 net/sctp/associola.c sctp_assoc_update use after free

CVSS Meta Temp Score
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3.5$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Linux Kernel 3.18.7. This impacts the function sctp_assoc_update of the file net/sctp/associola.c. Executing a manipulation can lead to use after free. The identification of this vulnerability is CVE-2015-1421. There is no exploit available. A patch should be applied to remediate this issue.

Detailsinfo

A vulnerability has been found in Linux Kernel 3.18.7 (Operating System) and classified as problematic. This vulnerability affects the function sctp_assoc_update of the file net/sctp/associola.c. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect availability.

The weakness was shared 01/29/2015 by Daniel Borkmann as CSCup82990 as confirmed mailinglist post (oss-sec). The advisory is available at seclists.org. This vulnerability was named CVE-2015-1421 since 01/29/2015. The exploitation appears to be easy. Local access is required to approach this attack. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. Responsible for the vulnerability is the following code: 

sctp_auth_key_put(asoc->asoc_shared_key);

The vulnerability scanner Nessus provides a plugin with the ID 82661 (Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2562-1)), 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 155207 (Oracle Enterprise Linux Security Update for Unbreakable Enterprise Kernel (ELSA-2015-3019)).

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 is also documented in the databases at X-Force (100644), Tenable (82661), SecurityFocus (BID 72356†) and Vulnerability Center (SBV-49095†). Additional details are provided at seclists.org. The entries VDB-69033, VDB-69205, VDB-73983 and VDB-90521 are related to this item. Once again VulDB remains the best source for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.0
VulDB Meta Temp Score: 3.5

VulDB Base Score: 4.0
VulDB Temp Score: 3.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
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NVD Base Score: 🔍

Exploitinginfo

Class: Use after free
CWE: CWE-416 / CWE-119
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: 82661
Nessus Name: Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2562-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍
Nessus Port: 🔍

OpenVAS ID: 800909
OpenVAS Name: Fedora Update for kernel FEDORA-2015-5024
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Patch
Status: 🔍

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

Patch: 600ddd6825543962fb807884169e57b580dba208

Timelineinfo

01/28/2015 🔍
01/29/2015 +0 days 🔍
01/29/2015 +0 days 🔍
01/29/2015 +0 days 🔍
02/05/2015 +7 days 🔍
03/16/2015 +39 days 🔍
03/16/2015 +0 days 🔍
04/08/2015 +22 days 🔍
04/09/2015 +1 days 🔍
03/08/2022 +2525 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: CSCup82990
Researcher: Daniel Borkmann
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1421 (🔍)
GCVE (CVE): GCVE-0-2015-1421
GCVE (VulDB): GCVE-100-69034

OVAL: 🔍

X-Force: 100644 - Linux Kernel INIT denial of service, Low Risk
SecurityFocus: 72356 - Linux Kernel CVE-2015-1421 Local Denial of Service Vulnerability
SecurityTracker: 1032172
Vulnerability Center: 49095 - Linux Kernel before 3.18.8 Remote DoS due to Use-after-free Vulnerability in the sctp_assoc_update Function, Critical

Misc.: 🔍
See also: 🔍

Entryinfo

Created: 02/05/2015 13:58
Updated: 03/08/2022 13:48
Changes: 02/05/2015 13:58 (80), 09/24/2018 08:59 (8), 03/08/2022 13:48 (5)
Complete: 🔍
Cache ID: 216:F1E:103

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