CVE-2020-15260
MEDIUMDescription
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.
How to fix
TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works
Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.
CVSS v3 Vector
Exploitability
Impact
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:H/A:N
Exploit Intelligence
Moderate risk: more likely to be exploited than 59% of all known CVEs.
References
Related Vulnerabilities
Other CWE-297 vulnerabilities, ordered by exploit likelihood. View all
| CVE | Severity | CVSS | EPSS | Exploited | Fix |
|---|---|---|---|---|---|
| CVE-2014-3522 | Medium | 4.0 | 5.6% | - | Fix |
| CVE-2018-10936 | High | 8.1 | 2.9% | - | Fix |
| CVE-2024-2466 | Medium | 6.5 | 1.3% | - | Fix |
| CVE-2020-1887 | Critical | 9.1 | 1.3% | - | Fix |
| CVE-2020-14387 | High | 7.4 | 1.1% | - | Fix |
| CVE-2020-1758 | Medium | 5.3 | 0.9% | - | Fix |
Common questions
How do I fix CVE-2020-15260?
Published advisories record a fix for 8 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.
Is CVE-2020-15260 being actively exploited?
Not that we know of. CVE-2020-15260 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.99% is the estimated probability that it will be exploited in the next 30 days. That is higher than 59% of all scored CVEs.
How severe is CVE-2020-15260?
CVE-2020-15260 has a CVSS v3 base score of 6.8, rated medium. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.
What does CVE-2020-15260 affect?
Published advisories record a fix for ring (Debian), libpj2 (Ubuntu), libpjmedia2 (Ubuntu), libpjnath2 (Ubuntu), and 4 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.
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Markdown
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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.