PJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, STUN, TURN, and ICE. In version 2.10 and earlier, PJSIP transport can be reused if they have the same IP address + port + protocol. However, this is insufficient for secure transport since it lacks remote hostname authentication. Suppose we have created a TLS connection to `sip.foo.com`, which has an IP address `100.1.1.1`. If we want to create a TLS connection to another hostname, say `sip.bar.com`, which has the same IP address, then it will reuse that existing connection, even though `100.1.1.1` does not have certificate to authenticate as `sip.bar.com`. The vulnerability allows for an insecure interaction without user awareness. It affects users who need access to connections to different destinations that translate to the same address, and allows man-in-the-middle attack if attacker can route a connection to another destination such as in the case of DNS spoofing.
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History
No history.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published: 2021-03-10T22:30:16
Updated: 2024-08-04T13:15:19.022Z
Reserved: 2020-06-25T00:00:00
Link: CVE-2020-15260
Vulnrichment
No data.
NVD
Status : Modified
Published: 2021-03-10T23:15:12.300
Modified: 2024-11-21T05:05:13.027
Link: CVE-2020-15260
Redhat
No data.