Linux Kernel add_key memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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2.9$0-$5k0.00

A vulnerability was found in Linux Kernel (Operating System) (version now known). It has been declared as problematic. Affected by this vulnerability is the function add_key. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect availability. The summary by CVE is:

Memory leak in the __key_link_end function in security/keys/keyring.c in the Linux kernel before 4.1.4 allows local users to cause a denial of service (memory consumption) via many add_key system calls that refer to existing keys.

The weakness was released 07/27/2015 as Bug 1245658 as confirmed bug report (Bugzilla). It is possible to read the advisory at bugzilla.redhat.com. This vulnerability is known as CVE-2015-1333 since 01/22/2015. The exploitation appears to be easy. Attacking locally is a requirement. Required for exploitation is a single authentication. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 85968 (OracleVM 3.3 : kernel-uek (OVMSA-2015-0122)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family OracleVM Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 175492 (Debian Security Update for linux (DSA 3329-1)).

The vulnerability is also documented in the databases at X-Force (105121), Tenable (85968), SecurityFocus (BID 76050†) and Vulnerability Center (SBV-52817†). Entries connected to this vulnerability are available at VDB-76062, VDB-76352, VDB-76848 and VDB-76872. 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: 3.3
VulDB Meta Temp Score: 2.9

VulDB Base Score: 3.3
VulDB Temp Score: 2.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Unproven

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 85968
Nessus Name: OracleVM 3.3 : kernel-uek (OVMSA-2015-0122)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍

OpenVAS ID: 703329
OpenVAS Name: Debian Security Advisory DSA 3329-1 (linux - security update)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: git.kernel.org

Timelineinfo

01/22/2015 🔍
07/27/2015 +186 days 🔍
07/27/2015 +0 days 🔍
07/27/2015 +0 days 🔍
07/29/2015 +2 days 🔍
08/31/2015 +33 days 🔍
09/20/2015 +20 days 🔍
06/07/2022 +2452 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: Bug 1245658
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2015-1333 (🔍)
OVAL: 🔍

X-Force: 105121 - Linux Kernel add_key() denial of service
SecurityFocus: 76050 - Linux Kernel 'security/keys/keyring.c' Local Denial of Service Vulnerability
Vulnerability Center: 52817 - Linux kernel before 4.1.4 Local DoS in Security/keys/keyring.c, Medium

See also: 🔍

Entryinfo

Created: 07/29/2015 10:45 AM
Updated: 06/07/2022 07:07 AM
Changes: 07/29/2015 10:45 AM (65), 01/02/2018 09:56 AM (10), 06/07/2022 06:56 AM (3), 06/07/2022 07:07 AM (1)
Complete: 🔍
Cache ID: 18:B5E:40

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