Schwachstellen / CVE-2026-5503

kritisch

CVE-2026-5503

In TLSX_EchChangeSNI, the ctx->extensions branch set extensions uncond ...

Veröffentlicht Geändert CWE 787
In der Trivy Database seit spätestens 24. Okt. 2026, 07:11 UTCWann der Eintrag vor diesem Build hinzukam, ist nicht erfasst.

Einstufung nach Quelle

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Julia6.9CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N

Trivys eigenes Label ist CRITICAL. Kritisch laut NVD. Niedriger laut Julia (mittel).

Beschreibung

In TLSX_EchChangeSNI, the ctx->extensions branch set extensions unconditionally even when TLSX_Find returned NULL. This caused TLSX_UseSNI to attach the attacker-controlled publicName to the shared WOLFSSL_CTX when no inner SNI was configured. TLSX_EchRestoreSNI then failed to clean it up because its removal was gated on serverNameX != NULL. The inner ClientHello was sized before the pollution but written after it, causing TLSX_SNI_Write to memcpy 255 bytes past the allocation boundary.

Betroffene Pakete und behobene Versionen

QuellePaketBehoben in
alpine 3.23wolfssl5.9.1-r0
alpine 3.24wolfssl5.9.1-r0
alpine edgewolfssl5.9.1-r0
debian 11wolfsslkein Fix angegeben
debian 12wolfsslkein Fix angegeben
debian 13wolfsslkein Fix angegeben
echowolfsslkein Fix angegeben
julia::Julia Ecosystem Security AdvisorieswolfSSL_jll5.9.2+0
rapidfort alpine 3.20wolfssl5.9.1-r0
rapidfort alpine 3.21wolfssl5.9.1-r0
rapidfort alpine 3.22wolfssl5.9.1-r0
rapidfort debian 12wolfssl0:5.9.1-0.1
Alle 13 Einträge aus 13 Quellen zeigen
QuellePaketBehoben in
alpine 3.23wolfssl5.9.1-r0
alpine 3.24wolfssl5.9.1-r0
alpine edgewolfssl5.9.1-r0
debian 11wolfsslkein Fix angegeben
debian 12wolfsslkein Fix angegeben
debian 13wolfsslkein Fix angegeben
echowolfsslkein Fix angegeben
julia::Julia Ecosystem Security AdvisorieswolfSSL_jll5.9.2+0
rapidfort alpine 3.20wolfssl5.9.1-r0
rapidfort alpine 3.21wolfssl5.9.1-r0
rapidfort alpine 3.22wolfssl5.9.1-r0
rapidfort debian 12wolfssl0:5.9.1-0.1
rapidfort debian 13wolfssl0:5.9.1-0.1

Referenzen

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.