VDB-151226 · CVE-2019-20509 · GCVE-0-2019-20509

libarchive up to 3.4.0 LHA Archive archive_read_support_format_lha.c out-of-bounds

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.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability described as critical has been identified in libarchive up to 3.4.0. This impacts an unknown function of the file archive_read_support_format_lha.c of the component LHA Archive Handler. Such manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2019-20509. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in libarchive up to 3.4.0 (File Compression Software). It has been rated as critical. Affected by this issue is an unknown code block of the file archive_read_support_format_lha.c of the component LHA Archive Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. CVE summarizes:

archive_read_support_format_lha.c in libarchive before 3.4.1 does not ensure valid sizes for UTF-16 input, which allows remote attackers to cause a denial of service (heap-based buffer over-read and application crash) via a crafted LHA archive.

The weakness was released 03/10/2020. This vulnerability is handled as CVE-2019-20509 since 03/10/2020. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

Upgrading to version 3.4.1 eliminates this vulnerability.

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

Productinfo

Type

File Compression Software

Name

libarchive

Version

License

open-source

Website

Product: https://github.com/libarchive/libarchive/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.9
VulDB Meta Temp Score: 6.8

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: libarchive 3.4.1
Patch: github.com

Timelineinfo

03/10/2020 🔍
03/10/2020 +0 days 🔍
03/11/2020 +1 days 🔍
04/11/2024 +1492 days 🔍

Sourcesinfo

Product: github.com

Status: Not defined

CVE: CVE-2019-20509 (🔍)
GCVE (CVE): GCVE-0-2019-20509
GCVE (VulDB): GCVE-100-151226

Entryinfo

Created: 03/11/2020 12:31
Updated: 04/11/2024 12:28
Changes: 03/11/2020 12:31 (37), 03/11/2020 12:36 (18), 04/11/2024 12:28 (19)
Complete: 🔍
Cache ID: 216::103