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CVE-2026-57197

NONE
Risk Signal Score0/100 — NIEDRIG

Erwähnungen (letzte 60 Tage)

Artikel

EPSS-Score

0.5%

Exploit-Wahrscheinlichkeit (30 Tage)

Beschreibung

Asterisk is an open source private branch exchange and telephony toolkit. Prior to Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3, an unbounded `memcpy` of `OGG/Speex` packet data in `format_ogg_speex` can cause a heap buffer overflow and crash Asterisk when reading a file containing corrupted Speex audio. The attacker must create the file and make it available to Asterisk either through sufficiently elevated privileges or by convincing an Asterisk administrator to make it available. Asterisk must also be configured to play that file. This issue is fixed in Asterisk 20.20.1, 21.12.3, 22.10.1, 23.4.1 and Certified Asterisk 20.7-cert11, 22.8-cert3.

Erkennung & Indikatoren

Ausnutzung

In den geprüften Quellen nicht genannt

Behobene Versionen

  • Asterisk 20.20.1
  • Asterisk 21.12.3
  • Asterisk 22.10.1
  • Asterisk 23.4.1
  • Certified Asterisk 20.7-cert11
  • Certified Asterisk 22.8-cert3

Threat-Hunting-Queries

Detection for heap buffer overflow in OGG/Speex packet processing. Look for Asterisk logs indicating oversized OGG/Speex packets being skipped, which could suggest an attempted exploit.

Sentinel/Defender KQL

DeviceProcessEvents
| where FileName == "asterisk" and ProcessCommandLine contains "OGG/Speex packet too large"

Splunk SPL

index=your_asterisk_index "OGG/Speex packet too large" | sourcetype=asterisk_logs

Sigma

title: Asterisk OGG/Speex Heap Buffer Overflow Attempt
logsource:
  product: asterisk
  service: logs
detection:
  keywords:
    - 'OGG/Speex packet too large'
  condition: keywords
level: high

Elastic ES|QL

FROM logs-asterisk-*
| WHERE message : "OGG/Speex packet too large"

SecBoard-generated · behavioral · requires customization — Von SecBoard erzeugt und nicht in einer Zielumgebung validiert. Vor dem Einsatz an die eigene Protokollierung anpassen.

Indikatoren

Datei-Hashes (6)

  • 0a2c1d9e910f7c4dfffa05e328accb8a96990df8
  • 0e6d761ed83f1671632c91805252767eae85e1a2
  • 1cf189549994e0898954c814ce5a023cd969f1db
  • 29026ece6fdd1834bb8f49c013ef163745ff2bbd
  • 336ebe762bf6dfaf279796700de8ab51f7acd2f3
  • ccec146953b5e13043a36663af84e5a50ca633a6

Übernommen wurden nur Indikatoren, die wörtlich in einer Hersteller- oder Research-Quelle standen.

Referenzen