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PRIOn knowledge basePRION:CVE-2019-18976HistoryNov 22, 2019 - 5:15 p.m.
Null pointer dereference
2019-11-2217:15:00
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An issue was discovered in res_pjsip_t38.c in Sangoma Asterisk through 13.x and Certified Asterisk through 13.21-x. If it receives a re-invite initiating T.38 faxing and has a port of 0 and no c line in the SDP, a NULL pointer dereference and crash will occur. This is different from CVE-2019-18940.
References
downloads.asterisk.org/pub/security/AST-2019-008.html
lists.debian.org/debian-lts-announce/2022/04/msg00001.html
packetstormsecurity.com/files/155436/Asterisk-Project-Security-Advisory-AST-2019-008.html
seclists.org/fulldisclosure/2019/Nov/20
www.asterisk.org/downloads/security-advisories
www.cybersecurity-help.cz/vdb/SB2019112218?affChecked=1
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