Linux Kernel up to 4.2 ASN.1 BER lib/asn1_decoder.c public_key_verify_signature Panic cryptographic issue

CVSS Meta Temp Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Linux Kernel up to 4.2. It has been rated as problematic. Affected by this issue is the function public_key_verify_signature in the library lib/asn1_decoder.c of the component ASN.1 BER Handler. Performing a manipulation results in cryptographic issue (Panic). This vulnerability is cataloged as CVE-2016-2053. The attack must be initiated from a local position. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Linux Kernel up to 4.2 (Operating System). It has been classified as critical. This affects the function public_key_verify_signature in the library lib/asn1_decoder.c of the component ASN.1 BER Handler. The manipulation with an unknown input leads to a cryptographic issue vulnerability (Panic). CWE is classifying the issue as CWE-310. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

The asn1_ber_decoder function in lib/asn1_decoder.c in the Linux kernel before 4.3 allows attackers to cause a denial of service (panic) via an ASN.1 BER file that lacks a public key, leading to mishandling by the public_key_verify_signature function in crypto/asymmetric_keys/public_key.c.

The weakness was shared 05/02/2016 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2016-2053 since 01/25/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1600 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 93278 (SUSE SLES12 Security Update : kernel (SUSE-SU-2016:2006-1)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168927 (OpenSuSE Security Update for the Linux Kernel (openSUSE-SU-2016:1641-1)).

Upgrading to version 4.3 eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (93278). The entries VDB-87126, VDB-87304, VDB-87608 and VDB-87611 are related to this item. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 8.4
VulDB Temp Score: 8.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 4.7
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Name: Panic
Class: Cryptographic issue / Panic
CWE: CWE-310
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 93278
Nessus Name: SUSE SLES12 Security Update : kernel (SUSE-SU-2016:2006-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 871165
OpenVAS Name: RedHat Update for kernel RHSA-2016:2574-02
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: Kernel 4.3
Patch: git.kernel.org

Timelineinfo

01/25/2016 🔍
05/02/2016 +98 days 🔍
05/02/2016 +0 days 🔍
05/03/2016 +1 days 🔍
08/09/2016 +98 days 🔍
09/02/2016 +24 days 🔍
07/27/2022 +2154 days 🔍

Sourcesinfo

Vendor: kernel.org

Advisory: 0d62e9dd6da45bbf0f33a8617afc5fe774c8f45f
Status: Not defined
Confirmation: 🔍

CVE: CVE-2016-2053 (🔍)
GCVE (CVE): GCVE-0-2016-2053
GCVE (VulDB): GCVE-100-83139
SecurityTracker: 1036763

See also: 🔍

Entryinfo

Created: 05/03/2016 11:25
Updated: 07/27/2022 18:30
Changes: 05/03/2016 11:25 (61), 11/07/2018 16:32 (19), 07/27/2022 18:22 (6), 07/27/2022 18:30 (1)
Complete: 🔍
Cache ID: 216:822:103

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