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CVE-2026-56123

Опубликовано: 27 июн. 2026
Источник: msrc
CVSS3: 8.1
EPSS Низкий

Описание

socat 1.8.0.0 - 1.8.1.1 Heap Buffer Overflow via SOCKS5 Reply Parser

EPSS

Процентиль: 23%
0.00308
Низкий

8.1 High

CVSS3

Связанные уязвимости

CVSS3: 8.1
ubuntu
около 1 месяца назад

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read through a signed char field causing a negative bytes_to_read value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.

CVSS3: 8.1
nvd
около 1 месяца назад

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read through a signed char field causing a negative bytes_to_read value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.

CVSS3: 8.1
debian
около 1 месяца назад

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer ove ...

CVSS3: 8.1
github
около 1 месяца назад

socat versions 1.8.0.0 through 1.8.1.1 contain a heap-based buffer overflow vulnerability that allows a malicious SOCKS5 proxy server to overwrite adjacent heap memory by exploiting a sign-extension flaw in the DOMAINNAME reply parser. During connection setup, the domain name length byte is read through a signed char field causing a negative bytes_to_read value that is implicitly converted to size_t, resulting in an unbounded heap write into the 262-byte reply buffer with attacker-controlled size and content.

EPSS

Процентиль: 23%
0.00308
Низкий

8.1 High

CVSS3