FreeSWITCH mod_spandsp: out-of-bounds write parsing UDPTL error-recovery data

Özet

Türkçe özeti henüz hazır değil; şimdilik kaynağın kendi açıklamasını gösteriyoruz.

FreeSWITCH is a Software Defined Telecom Stack enabling the digital transformation from proprietary telecom switches to a software implementation that runs on any commodity hardware. Prior to 1.11.2, udptl_rx_packet() used a peer-controlled FEC entry count directly to fill five-entry FEC arrays in a mod_spandsp T.38 session. A larger count wrote sender-controlled error-recovery data beyond those arrays and persisted the oversized count for a later reconstruction pass. Any peer able to deliver UDPTL to an established T.38 fax session can reach the parser, including deployments using fax applications or a T.38 gateway. The memory corruption can crash FreeSWITCH and end every active call, although remote code execution has not been demonstrated. This issue is fixed in version 1.11.2.

Etkilenen sürümler1 yazılım

Kaynaklar5 kaynak

• CVE.org kaydı
• NVD kaydı
• github.com/…switch/security/advisories/GHSA-mjp3-3cq2-hxj4 Diğer
• github.com/…ommit/b999d2a594f025ac0dd4d7b137635308ef298272 Diğer
• github.com/signalwire/freeswitch/releases/tag/v1.11.2 Diğer

Kayıt geçmişi

1. 5 Kas 2026 22:41Yayımlandı

İlgili açıklar

• 7,5 CVE-2026-116782FreeSWITCH: Pre-authentication invalid pointer dereference in mod_rtmp connect command handling
• 9,1 CVE-2026-116790FreeSWITCH: Inbound ICE connectivity checks are accepted without verifying STUN MESSAGE-INTEGRITY
• 8,2 CVE-2026-116788FreeSWITCH: Pre-authentication heap buffer overflow in core XML empty-entity decoding
• 2,7 CVE-2026-116780FreeSWITCH: Heap out-of-bounds read in FreeSWITCH core variable expansion via `${variable:offset}` slicing
• 7,5 CVE-2026-116784FreeSWITCH: Out-of-bounds read in RTCP NACK feedback parsing
• 9,8 CVE-2026-116779FreeSWITCH: Inbound SIP MESSAGE can select the api chat proto and run FreeSWITCH API commands