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.
History

No history.

cve-icon 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

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2021-03-10T23:15:12.300

Modified: 2024-11-21T05:05:13.027

Link: CVE-2020-15260

cve-icon Redhat

No data.