USN-8122-1: PJSIP vulnerabilities

USN-8122-1: PJSIP vulnerabilities

https://ubuntu.com/security/notices/rss.xml / Tue, 03/24/2026 - 23:08
Youngsung Kim discovered that PJSIP did not properly parse numeric header fields in SIP messages. A remote attacker could use this issue to cause PJSIP to crash, resulting in a denial of service, or possibly execute arbitrary code. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-16872) Peter Koletzki discovered that PJSIP did not properly handle certain connection requests. A remote attacker could possibly use this issue to cause PJSIP to enter an unrecoverable state and reject further connections, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2017-16875) Alfred Farrugia, Sandro Gauci, and Kevin Harwell discovered that PJSIP did not properly parse certain SDP messages. A remote attacker could possibly use this issue to cause PJSIP to crash, resulting in a denial of service. This issue only affected Ubuntu 16.04 LTS. (CVE-2018-1000098, CVE-2018-1000099) Lauri Vänskä discovered that PJSIP did not verify hostnames when reusing TLS connections. If a remote attacker were able to intercept communication, this flaw could possibly be exploited to view sensitive information. (CVE-2020-15260) It was discovered that PJSIP did not properly handle certain sequences of SDP messages. A remote attacker could possibly use this issue to cause PJSIP to crash, resulting in a denial of service. (CVE-2021-21375) It was discovered that the SSL socket implementation in PJSIP contained a race condition. A remote attacker could possibly use this issue to cause PJSIP to crash, resulting in a denial of service. This issue was only addressed in Ubuntu 18.04 LTS. (CVE-2021-32686) It was discovered that PJSIP did not properly parse certain STUN messages. A remote attacker could use this issue to cause PJSIP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-37706) Uriya Yavnieli discovered that PJSIP did not properly manage memory under certain conditions. A remote attacker could use this issue to cause PJSIP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2021-43299, CVE-2021-43300, CVE-2021-43301, CVE-2021-43302, CVE-2021-43303) It was discovered that PJSIP did not properly manage memory when processing ICE session credentials. A remote attacker could use this issue to cause PJSIP to crash, resulting in a denial of service, or possibly execute arbitrary code. (CVE-2026-25994)

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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.