The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applicationsUpgrade Debian:12
ring
to version 20210112.2.b757bac~ds1-1 or higher.
Note: Versions mentioned in the description apply only to the upstream ring
package and not the ring
package as distributed by Debian
.
See How to fix?
for Debian:12
relevant fixed versions and status.
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.