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CVE-2026-3731

Опубликовано: 08 мар. 2026
Источник: redhat
CVSS3: 5.3

Описание

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.

A flaw was found in libssh. A remote attacker could trigger an out-of-bounds read vulnerability in the SFTP Extension Name Handler by manipulating the idx argument in the sftp_extensions_get_name or sftp_extensions_get_data functions. This could lead to a Denial of Service (DoS), making the affected system unresponsive.

Отчет

A MODERATE impact out-of-bounds read vulnerability exists in libssh's SFTP extension. A remote attacker could exploit this flaw by manipulating an argument to the sftp_extensions_get_name/sftp_extensions_get_data functions, potentially leading to a denial of service or information disclosure. This affects Red Hat Enterprise Linux versions utilizing libssh.

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 10libsshFix deferred
Red Hat Enterprise Linux 6libssh2Fix deferred
Red Hat Enterprise Linux 7libssh2Fix deferred
Red Hat Enterprise Linux 8libsshFix deferred
Red Hat Enterprise Linux 9libsshFix deferred
Red Hat OpenShift Container Platform 4rhcosFix deferred

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Дополнительная информация

Статус:

Moderate
Дефект:
CWE-125
https://bugzilla.redhat.com/show_bug.cgi?id=2445579libssh: libssh: Denial of Service via out-of-bounds read in SFTP extension name handler

5.3 Medium

CVSS3

Связанные уязвимости

CVSS3: 5.3
ubuntu
18 дней назад

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.

CVSS3: 5.3
nvd
18 дней назад

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.

CVSS3: 5.3
msrc
7 дней назад

libssh SFTP Extension Name sftp.c sftp_extensions_get_data out-of-bounds

CVSS3: 5.3
debian
18 дней назад

A weakness has been identified in libssh up to 0.11.3. The impacted el ...

CVSS3: 5.3
github
18 дней назад

A weakness has been identified in libssh up to 0.11.3. The impacted element is the function sftp_extensions_get_name/sftp_extensions_get_data of the file src/sftp.c of the component SFTP Extension Name Handler. Executing a manipulation of the argument idx can lead to out-of-bounds read. The attack may be performed from remote. Upgrading to version 0.11.4 and 0.12.0 is sufficient to resolve this issue. This patch is called 855a0853ad3abd4a6cd85ce06fce6d8d4c7a0b60. You should upgrade the affected component.

5.3 Medium

CVSS3