CVE-2026-125403

Description

Ettercap through 0.8.4.1 contains an out-of-bounds read and size_t underflow vulnerability in sslw_remove_sts() in src/ec_sslwrap.c, caused by a stale length and an unchecked memmem() result when stripping Strict-Transport-Security headers. A malicious HTTPS server whose response passes through Ettercap's SSL interception can trigger out-of-bounds reads and memory corruption in the Ettercap process, which normally runs as root.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

References

• https://github.com/Ettercap/ettercap/security/advisories/GHSA-hq2w-pg4m-6w63 ↗
• https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98 ↗
• https://github.com/Ettercap/ettercap/pull/1330 ↗
• https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L1294-L1322 ↗
• https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-out-of-bounds-read-via-sslw-remove-sts ↗