libarchive up to 3.1.x ZIP File process_extra size input validation

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.
CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in libarchive up to 3.1.x. It has been declared as problematic. Affected by this vulnerability is the function process_extra of the component ZIP File Handler. Executing a manipulation of the argument size can lead to input validation. This vulnerability is tracked as CVE-2015-8923. The attack can be launched remotely. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in libarchive up to 3.1.x (File Compression Software). It has been declared as critical. This vulnerability affects the function process_extra of the component ZIP File Handler. The manipulation of the argument size with an unknown input leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. As an impact it is known to affect availability. CVE summarizes:

The process_extra function in libarchive before 3.2.0 uses the size field and a signed number in an offset, which allows remote attackers to cause a denial of service (crash) via a crafted zip file.

The weakness was disclosed 09/20/2016 (Website). The advisory is available at lists.opensuse.org. This vulnerability was named CVE-2015-8923 since 06/17/2016. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit.

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 196532 (Ubuntu Security Notification for Libarchive Vulnerabilities (USN-3033-1)).

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 91309†). The entries VDB-90720, VDB-91353, VDB-91755 and VDB-91756 are pretty similar. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.5
VulDB Meta Temp Score: 6.3

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
💳💳💳💳💳💳
💳💳💳💳💳💳
💳💳💳💳💳💳
VectorComplexityAuthenticationConfidentialityIntegrityAvailability
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock
UnlockUnlockUnlockUnlockUnlockUnlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-DayUnlockUnlockUnlockUnlock
TodayUnlockUnlockUnlockUnlock

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-2015-8923 (🔍)
GCVE (CVE): GCVE-0-2015-8923
GCVE (VulDB): GCVE-100-91762

OVAL: 🔍

SecurityFocus: 91309 - libarchive CVE-2015-8923 Multiple Denial of Service Vulnerabilities

See also: 🔍

Entryinfo

Created: 09/21/2016 12:25
Updated: 09/19/2022 10:16
Changes: 09/21/2016 12:25 (67), 04/21/2019 12:41 (13), 09/19/2022 10:11 (4), 09/19/2022 10:16 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Discussion

No comments yet. Languages: en.

Please log in to comment.

◂ PreviousOverviewNext ▸

Do you need the next level of professionalism?

Upgrade your account now!