libarchive up to 3.1.x bsdtar null pointer dereference

CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic has been found in libarchive up to 3.1.x. This issue affects some unknown processing of the component bsdtar. Performing a manipulation results in null pointer dereference. This vulnerability is known as CVE-2015-8916. Attacking locally is a requirement. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical has been found in libarchive up to 3.1.x (File Compression Software). This affects some unknown processing of the component bsdtar. The manipulation with an unknown input leads to a null pointer dereference vulnerability. CWE is classifying the issue as CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

bsdtar in libarchive before 3.2.0 returns a success code without filling the entry when the header is a "split file in multivolume RAR," which allows remote attackers to cause a denial of service (NULL pointer dereference and crash) via a crafted rar file.

The weakness was published 09/20/2016 (Website). It is possible to read the advisory at openwall.com. This vulnerability is uniquely identified as CVE-2015-8916 since 06/17/2016. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 92312 (Ubuntu 12.04 LTS / 14.04 LTS / 15.10 / 16.04 LTS : libarchive vulnerabilities (USN-3033-1)), 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 157251 (Oracle Enterprise Linux Security Update for libarchive (ELSA-2016-1844)).

Upgrading to version 3.2.0 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92312) and SecurityFocus (BID 91296†). Similar entries are available at VDB-90720, VDB-91353, VDB-91754 and VDB-91756. Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / CWE-404
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: 92312
Nessus Name: Ubuntu 12.04 LTS / 14.04 LTS / 15.10 / 16.04 LTS : libarchive vulnerabilities (USN-3033-1)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 15621
OpenVAS Name: Amazon Linux Local Check: alas-2016-743
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libarchive 3.2.0

Timelineinfo

06/17/2016 🔍
06/17/2016 +0 days 🔍
07/14/2016 +27 days 🔍
07/15/2016 +1 days 🔍
09/20/2016 +67 days 🔍
09/20/2016 +0 days 🔍
09/21/2016 +1 days 🔍
09/19/2022 +2189 days 🔍

Sourcesinfo

Advisory: USN-3033-1
Status: Not defined
Confirmation: 🔍

CVE: CVE-2015-8916 (🔍)
GCVE (CVE): GCVE-0-2015-8916
GCVE (VulDB): GCVE-100-91755

OVAL: 🔍

SecurityFocus: 91296 - libarchive CVE-2015-8916 Denial of Service Vulnerability

See also: 🔍

Entryinfo

Created: 09/21/2016 12:24
Updated: 09/19/2022 09:37
Changes: 09/21/2016 12:24 (50), 04/21/2019 11:59 (19), 09/19/2022 09:34 (2), 09/19/2022 09:37 (12)
Complete: 🔍
Cache ID: 216::103

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