libarchive 3.4.0 archive_string.c archive_wstring_append_from_mbs out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, has been found in libarchive 3.4.0. Affected by this vulnerability is the function archive_wstring_append_from_mbs of the file archive_string.c. Performing a manipulation results in out-of-bounds. This vulnerability is identified as CVE-2019-19221. The attack is only possible with local access. There is not any exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in libarchive 3.4.0 (File Compression Software). This affects the function archive_wstring_append_from_mbs of the file archive_string.c. The manipulation with an unknown input leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In Libarchive 3.4.0, archive_wstring_append_from_mbs in archive_string.c has an out-of-bounds read because of an incorrect mbrtowc or mbtowc call. For example, bsdtar crashes via a crafted archive.

The weakness was released 11/21/2019. This vulnerability is uniquely identified as CVE-2019-19221 since 11/21/2019. Attacking locally is a requirement. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 239805 (TencentOS Server 3: libarchive (TSSA-2022:0019)), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Tenable (239805). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.4
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 239805
Nessus Name: TencentOS Server 3: libarchive (TSSA-2022:0019)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Patch: github.com

Timelineinfo

11/21/2019 🔍
11/21/2019 +0 days 🔍
11/22/2019 +1 days 🔍
06/20/2025 +2037 days 🔍

Sourcesinfo

Product: github.com

Advisory: 22b1db9d46654afc6f0c28f90af8cdc84a199f41
Status: Confirmed

CVE: CVE-2019-19221 (🔍)
GCVE (CVE): GCVE-0-2019-19221
GCVE (VulDB): GCVE-100-146091

Entryinfo

Created: 11/22/2019 08:25
Updated: 06/20/2025 04:36
Changes: 11/22/2019 08:25 (36), 11/22/2019 08:30 (18), 02/26/2024 10:52 (5), 02/26/2024 10:58 (1), 06/20/2025 04:36 (23)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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