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GHSA-267h-vrw9-53p3

Опубликовано: 19 мар. 2026
Источник: github
Github: Не прошло ревью
CVSS4: 6.9
CVSS3: 9.8

Описание

Stack Buffer Overflow in wc_HpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH (Encrypted Client Hello) support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client program crash. This could be exploited by a malicious TLS server supporting ECH. Note that ECH is off by default, and is only enabled with enable-ech.

Stack Buffer Overflow in wc_HpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH (Encrypted Client Hello) support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client program crash. This could be exploited by a malicious TLS server supporting ECH. Note that ECH is off by default, and is only enabled with enable-ech.

EPSS

Процентиль: 42%
0.00199
Низкий

6.9 Medium

CVSS4

9.8 Critical

CVSS3

Дефекты

CWE-787

Связанные уязвимости

CVSS3: 9.8
nvd
12 дней назад

Stack Buffer Overflow in wc_HpkeLabeledExtract via Oversized ECH Config. A vulnerability existed in wolfSSL 5.8.4 ECH (Encrypted Client Hello) support, where a maliciously crafted ECH config could cause a stack buffer overflow on the client side, leading to potential remote execution and client program crash. This could be exploited by a malicious TLS server supporting ECH. Note that ECH is off by default, and is only enabled with enable-ech.

msrc
7 дней назад

Buffer Overflow in HPKE via Oversized ECH Config

CVSS3: 9.8
debian
12 дней назад

Stack Buffer Overflow in wc_HpkeLabeledExtract via Oversized ECH Confi ...

EPSS

Процентиль: 42%
0.00199
Низкий

6.9 Medium

CVSS4

9.8 Critical

CVSS3

Дефекты

CWE-787