CVE-2026-118371: falha de média gravidade em OpenBSD LibreSSL
LibreSSL through 4.4.0 CRLF Injection via OCSP_sendreq_new() Request Line
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13Vexday Risk Score
Sem sinal de exploração. Nenhum artefato público de exploração conhecido até agora.
ssvc Trackcvss 6.3epss 0.1%
LibreSSL through 4.4.0 contains a CRLF injection vulnerability in the libcrypto OCSP_sendreq_new() and OCSP_parse_url() functions, which write unvalidated request paths into the OCSP POST request line. Attackers can embed carriage return and line feed characters in a certificate's Authority Information Access OCSP URI to inject HTTP headers or split requests sent to responders and proxies.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Produtos afetados
OpenBSD · LibreSSLCVEs relacionadas — OpenBSD LibreSSL
No mesmo produto, das mais perigosas para as menos.
CVE-2026-118374HIGHLibreSSL ocspcheck through 4.4.0 Memory Exhaustion via Unbounded OCSP HTTP ResponseEPSS 0.2%CVE-2026-118372MEDIUMLibreSSL ocspcheck through 4.4.0 CRLF Injection via AIA OCSP URL PathEPSS 0.1%CVE-2026-118373MEDIUMLibreSSL ocspcheck through 4.4.0 Cleartext Transmission of OCSP Requests via url2host()EPSS 0.1%
Referências
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-4.4.0-relnotes.txthttps://github.com/libressl/portablehttps://github.com/openbsd/src/blob/3903c41d301d66facec69f7bf776b182cbc5ed62/lib/libcrypto/ocsp/ocsp_ht.c#L184https://github.com/openbsd/src/commit/d3f7195f4849d8a699cea4a3a67677f4b3dc1591https://www.vulncheck.com/advisories/libressl-through-4.4.0-crlf-injection-via-ocsp-sendreq-new-request-line