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CVE-2021-20193

Опубликовано: 17 янв. 2021
Источник: redhat
CVSS3: 3.3
EPSS Низкий

Описание

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

A flaw was found in the src/list.c of tar. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

Отчет

The vulnerability in GNU Tar is rated as moderate severity because, while it results in a denial of service through memory leaks, its exploitation is constrained to the application's operational context without impacting the broader system integrity or security. The leak occurs in the read_header() function, where memory allocated for handling tar entries is not properly released, leading to resource exhaustion. However, this vulnerability does not facilitate arbitrary code execution, privilege escalation, or data corruption, which are characteristic of higher-severity vulnerabilities. Furthermore, the memory leak is contingent upon user interaction, as it requires the extraction of maliciously crafted tar files, thereby limiting its potential for widespread exploitation.

Меры по смягчению последствий

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base or stability.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 6tarOut of support scope
Red Hat Enterprise Linux 7tarOut of support scope
Red Hat Enterprise Linux 8tarFix deferred
Red Hat Enterprise Linux 9tarNot affected

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-401->CWE-125
https://bugzilla.redhat.com/show_bug.cgi?id=1917565tar: Memory leak in read_header() in list.c

EPSS

Процентиль: 21%
0.00069
Низкий

3.3 Low

CVSS3

Связанные уязвимости

CVSS3: 3.3
ubuntu
около 5 лет назад

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

CVSS3: 3.3
nvd
около 5 лет назад

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw allows an attacker who can submit a crafted input file to tar to cause uncontrolled consumption of memory. The highest threat from this vulnerability is to system availability.

CVSS3: 3.3
debian
около 5 лет назад

A flaw was found in the src/list.c of tar 1.33 and earlier. This flaw ...

suse-cvrf
около 5 лет назад

Security update for tar

suse-cvrf
около 5 лет назад

Security update for tar

EPSS

Процентиль: 21%
0.00069
Низкий

3.3 Low

CVSS3