CVE-2026-49759— Erlang/OTP 安全漏洞

Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash

Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk. The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service. A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited. This issue affects OTP from OTP 17.0 before 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2 and 17.0.2.

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栈缓冲区溢出

Erlang/OTP 安全漏洞

Erlang/OTP是Erlang/OTP开源的一个JavaScript编写的处理处理异常的库。该库可以捕捉node.js内置API引发的异常。 Erlang/OTP erts 15.2.7.9之前版本、16.4.0.2版本和17.0.2版本存在安全漏洞，该漏洞源于inet_drv中sctp_parse_error_chunk函数在解析SCTP ERROR块时未检查边界，导致栈缓冲区溢出，未经身份验证的远程攻击者可通过发送特制SCTP ERROR块导致BEAM VM崩溃，限制为拒绝服务攻击。

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